WO2013097630A1 - Method, node, and system for selecting target cell - Google Patents
Method, node, and system for selecting target cell Download PDFInfo
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- WO2013097630A1 WO2013097630A1 PCT/CN2012/086859 CN2012086859W WO2013097630A1 WO 2013097630 A1 WO2013097630 A1 WO 2013097630A1 CN 2012086859 W CN2012086859 W CN 2012086859W WO 2013097630 A1 WO2013097630 A1 WO 2013097630A1
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- detection
- cell
- target node
- target
- uplink
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- 238000000034 method Methods 0.000 title claims abstract description 75
- 238000005259 measurement Methods 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims description 363
- 230000004044 response Effects 0.000 claims description 69
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000012217 deletion Methods 0.000 claims description 11
- 230000037430 deletion Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- MWRWFPQBGSZWNV-UHFFFAOYSA-N Dinitrosopentamethylenetetramine Chemical compound C1N2CN(N=O)CN1CN(N=O)C2 MWRWFPQBGSZWNV-UHFFFAOYSA-N 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00835—Determination of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
Definitions
- the present invention relates to the field of wireless communications, and in particular, to a method, a node, and a system for selecting a target cell.
- Hetneteous Network Hetnet
- the Hetnet is composed of a plurality of cells of different sizes and types, including: a macro cell and a micro cell.
- the micro-class cell includes: a micro cell, a pico cell, a Femto cell, and a remote radio head (RRH).
- RRH remote radio head
- UE User Equipment, UE
- User Equipment, UE does not have the ability to read the information of the neighboring cell system. It can only report the scrambling code of the target cell to the source control, but does not report the target cell identity.
- the number of micro-class neighboring cells of the macro cell is large, and the scrambling code available for the micro-cell is limited, so multiple micro-cells are likely to reuse the same scrambling code.
- the target node when the target node receives the scrambling code of the target cell, the scrambling code may correspond to multiple micro-class cells, and the target cell cannot be determined.
- the source node compares the scrambling code with the scrambling code of all neighboring micro-class cells, and sends a link establishment request message to one of the micro-class cells matching the scrambling code, which may cause handover to the wrong cell, which is difficult It is guaranteed that the UE is successfully switched to the target cell with higher signal quality.
- aspects of the present invention provide a method, a node, and a system for selecting a target cell, which are capable of selecting a target cell with a higher signal quality for the UE.
- An aspect of the present invention provides a method for selecting a target cell, which is applied to a target node side, and includes: sending a detection indication to a candidate cell, where the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE;
- Another aspect of the present invention provides a method for selecting a target cell, which is applied to a base station side, and includes: receiving a detection indication sent by a target node;
- Another aspect of the present invention provides a method for selecting a target cell, which is applied to a source node side, and includes: sending a handover request message to a target node according to a measurement report reported by the UE, where the handover request message includes a detection indication.
- Another aspect of the present invention provides a target node, including:
- a detecting unit configured to send a detection indication to the candidate cell, and receive a detection result sent by the candidate cell, where the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE, and the cell determining unit is configured to The detection result received by the detecting unit determines a target cell.
- a base station including:
- a receiving unit configured to receive a detection indication sent by the target node
- An uplink detecting unit configured to detect an uplink signal quality of the user equipment UE according to the detection indication, and a feedback unit, configured to send a detection result to the target node.
- Another aspect of the present invention provides a source node, including:
- the handover requesting unit is configured to send a handover request message to the target node according to the measurement report reported by the UE, where the handover request message includes a detection indication.
- Another aspect of the present invention provides a system for selecting a target cell, including: a target node, a base station, and a source node;
- the source node is configured to send a handover request message to the target node according to the measurement report reported by the UE, where the target node is configured to send a detection indication to the candidate cell, and receive a detection result sent by the candidate cell, where the detection indication is Used to indicate that the candidate cell detects the uplink signal quality of the user equipment UE A quantity; determining a target cell according to the detection result;
- the base station is configured to receive a detection indication sent by the target node, detect an uplink signal quality of the user equipment UE according to the detection indication, and send a detection result to the target node.
- the method, the node and the system for selecting a target cell described above by causing the candidate cell to detect the uplink signal quality of the UE to be changed, and selecting a candidate cell whose signal quality reaches a predetermined target from the candidate cell according to the detection result, as the target cell, and Compared with the method for arbitrarily selecting one of the candidate cells as the target cell in the prior art, the success rate of the handover can be improved, and the target 'region with higher signal quality can be selected for the UE.
- FIG. 1 is a flowchart of a method for selecting a target cell according to an embodiment of the present invention
- FIG. 2 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention.
- FIG. 3 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention.
- FIG. 4 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention.
- FIG. 5 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention.
- FIG. 6 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention.
- FIG. 7 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention.
- FIG. 8 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention.
- FIG. 9 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention.
- FIG. 10 is a schematic diagram showing the composition of a target node according to another embodiment of the present invention.
- FIG. 11 is a schematic diagram of a composition of a target node in another embodiment of the present invention.
- FIG. 12 is a schematic diagram of a composition of a target node according to another embodiment of the present invention.
- FIG. 13 is a schematic diagram showing the composition of a target node in another embodiment of the present invention.
- FIG. 14 is a schematic structural diagram of a base station according to another embodiment of the present invention.
- FIG. 15 is a schematic structural diagram of a base station according to another embodiment of the present invention.
- FIG. 16 is a schematic structural diagram of a base station according to another embodiment of the present invention.
- FIG. 17 is a schematic structural diagram of a source node according to another embodiment of the present invention.
- FIG. 18 is a schematic structural diagram of a system for selecting a target cell in another embodiment of the present invention.
- GSM Global System for Mobile Communications
- CDMA Code Division Multiple Access
- CDMA Code Division Multiple
- Access system time division multiple access (TDMA Time Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (FDMA), Frequency Division Multiple Addressing (OFDM) system, Orthogonal Frequency Division OFDMA (Orthogonal Frequency-Division Multiple Access) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system, and Other such communication systems.
- GSM Global System for Mobile Communications
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDM Frequency Division Multiple Addressing
- GPRS General Packet Radio Service
- LTE Long
- the user equipment which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
- the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
- RAN Radio Access Network
- the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
- a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Equipment. 4
- a base station e.g., an access point
- the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
- IP Internet Protocol
- the base station can also coordinate attribute management of the air interface.
- the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.
- the base station controller may be a base station controller in GSM or CDMA (BSC, base station controller l may also be a radio network controller (RNC) in WCDMA, and the present invention does not Limited.
- RNC radio network controller
- system and “network” are used interchangeably herein.
- the term “and/or” in this article is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist, exist alone B these three situations.
- the character "/" in this article generally indicates that the contextual object is an "or" relationship.
- An embodiment of the present invention provides a method for selecting a target cell, which can be applied to a source node side, as shown in FIG.
- the detection indication may be sent by using a dedicated detection message before the target node establishes a radio link with the candidate cell; or may be sent by the first link setup request message during the process of establishing a radio link between the target node and the candidate cell.
- the candidate cell may be composed of multiple cells, may be multiple micro-class cells using the same frequency and the same scrambling code, or may be a micro-class cell that uses the same scrambling code and is adjacent to the source cell, and may also pass other
- a cell set consisting of a plurality of cells obtained in a form is not limited in the embodiment of the present invention.
- a cell with a signal quality higher than a specified threshold may be selected from candidate cells by using a detection result sent by the candidate cell, or a cell with a signal quality exceeding a certain threshold and returning the fastest, or a candidate cell may be selected from the candidate cells.
- the cell with the highest signal quality is selected as the target cell for UE handover.
- the target cell may also be selected according to other predetermined criteria, which is not limited in the embodiment of the present invention.
- the method may further include:
- step 104 determining, according to the detection indication carried in the handover request message sent by the source node, whether to detect the uplink signal quality of the UE; if the handover request message carries the detection indication, performing step 104; if the handover request message is If the detection indication is not carried, step 105 is performed.
- the handover request message may be sent by the source node through a direct interface connected to the target node, or the source node may send a handover request message to the core network, and then the core network forwards the handover request message to the target node. Since the detection request sent by the source node to the target node may include the detection indication, the target node may directly obtain the detection indication from the handover request message. Alternatively, the source node may also send the information content in the detection indication by other means, and the target node acquires the information content to generate a detection indication and sends the detection indication to the candidate cell.
- the detection indication determines, according to whether the detection indication is present, whether the candidate cell needs to detect the signal quality of the UE, and determining, according to the uplink signal quality of the UE, the target cell when the detection indication exists; and not performing the detection indication when the indication does not exist.
- Uplink detection direct switching.
- the detection request identifier may be a Boolean identifier.
- the target node may enable the candidate cell to detect the signal quality of the UE, and select an appropriate target cell according to the detection result; when the detection request identifier When it is 0, the target node can directly obtain the target cell identifier from the handover request message, and switch the UE to the corresponding target cell.
- determining whether to perform uplink detection by detecting the target cell scrambling code carried in the indication for example, if the handover request message carries the target cell scrambling code, the target node may determine the candidate cell set according to the target cell scrambling code, and After detecting the signal quality of the candidate cell, the target cell is selected; if the target cell scrambling code is not carried in the handover request message, the handover may be completed according to the existing handover procedure. Or determining whether to perform uplink detection by detecting a micro-class candidate cell set identifier carried in the indication, where the micro-class candidate cell set identifier is composed of a mapping value of the source cell identifier and a mapping value of the target cell scrambling code. It can be understood that the form of the detection indication for determining whether to perform the uplink quality detection includes, but is not limited to, the above forms, and may also be other forms of identification, and the embodiments of the present invention are no longer described.
- the target node may determine, according to the target cell scrambling code carried in the handover request message, the candidate cell that shares the same scrambling code, or may be identified according to the micro-class cell collection identifier carried in the handover request message.
- a candidate cell There may be multiple candidate cells, and when a detection indication is sent, a detection indication is sent to each of the plurality of candidate cells.
- the method for determining the candidate cell may be: according to the handover request message sent by the source node, if the request message includes the source cell information, determining that the cell adjacent to the source cell is a candidate cell.
- the method for determining the candidate cell may also be: if the request message includes the scrambling code information of the target cell, determining that the cell that matches the received scrambling code information is a candidate cell.
- the method may further be: if the request message includes the scrambling code information and the source cell information of the target cell, determining that the cell adjacent to the source cell and having the same scrambling code as the received target cell is the candidate cell.
- the normal handover procedure may be: acquiring the target cell identifier from the handover request message, and switching the UE to the corresponding target cell; or acquiring the target cell scrambling code, and sending the link to one of the micro-class cells corresponding to the target cell scrambling code.
- the detection indication may include at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of an uplink frequency of the UE, configuration information of discontinuous transmission of the UE, Intra-frame timing offset information of the uplink dedicated physical control channel of the UE, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE uplink measurement amount, detection duration, continuous detection time, reporting threshold, etc.
- the information included in the detection indication includes, but is not limited to, the information element (IE) described above.
- the information that the detection indication can include and the specific meaning of each information can be as shown in Table 1.
- Maximum detection duration for example: 40, 60, 80, 100, 120,
- the UE's uplink transport format combination set uses the radio link request in TS 25.433
- the uplink cell of the source cell used to enhance DCH operation
- the starting point of the UE uplink DPCCH frame is relative to the target
- the configuration information of the UE discontinuous packet transmission mode is used to configure UE detection for discontinuous packet transmission.
- the configuration information of the UE discontinuous packet transmission mode may include one or more parameters in Table 2.
- the source cell notifies the UE to stop the mode of discontinuous packet transmission before initiating the handover, so that the candidate cell does not want to detect the UE based on the mode in which the UE transmits in the discontinuous packet.
- Inactivity Threshold defines how much E-DCH TTI, CPC mode from
- UE_DTX_cycle-1 to UE-DTX-cycle-2 UE DTX Long defines the number of pre-Preamble pilot slots to start transmitting in UE-DTX-cycle-2 mode (all values are used for UL DPCCH DTX and DL DRX)
- MAC Inactivity identifies the wait time required to initiate E-DCH inactivity
- the priority of the uplink transmission CQI report is increased, so that the CQI report is sent even in the gap of DTX.
- UE DPCCH burstl needs to transmit the number of subframes in UE_DTX_cycle-1 mode.
- UE_DTX_cycle_ 1- UE-DPCCH_burst-1 is the number of subframes not transmitted
- UE DPCCH burst2 needs to transmit the number of subframes in UE_DTX_cycle-2 mode.
- UE_DTX_cycle_ 1- UE-DPCCH_burst-1 is the number of subframes not transmitted
- the information included in the detection indication sent by the target node to the candidate cell includes, but is not limited to, the foregoing content, and the corresponding content may be added or modified according to an actual situation. Not limited.
- the content and the form of the information included in the detection indication may be pre-configured on the target node, or may be sent by the source node to the target node through the handover request message, or may be sent by the core network to the target node, and the configuration of the specific detection indication may be Source Mode
- the embodiments of the present invention are also not limited to 1.
- Another embodiment of the present invention provides a method for selecting a target cell, which can be applied to a target node side, as shown in FIG.
- the detection indication may be sent by detecting a dedicated message, so the steps 101-102 may also be implemented as follows:
- the detection dedicated message carrying the detection indication may be used to indicate that the candidate cell detects the uplink signal quality of the UE to be handed over.
- the detection specific response message may include a success response message of the detection result, or may be a response message of the detection failure.
- the detection result may be an indication that the UE is detected. Further, it may indicate that the uplink signal quality of the UE is higher than a certain threshold.
- the test results can also contain specific measurements.
- the detection result includes at least one of the following information: an indication exceeding a predetermined threshold, an indication of detecting the UE, a measurement value of an uplink signal of the specific UE, a length of time of detection, and a length of continuous detection time.
- the multiple detection results may be compared, and the cell whose signal quality reaches a predetermined criterion is selected as the target cell. If the target node receives the message that the detection fails to be sent by the candidate cell, the candidate cell that fails the detection may be directly eliminated, and the target cell is selected from the other candidate cells.
- the predetermined criterion may be preset according to actual conditions. For example, the predetermined criterion may be that the signal quality is the highest, and the cell with the highest signal quality is selected from the candidate cells as the target cell.
- the candidate cell may be abandoned and the target cell may be selected from other candidate cells.
- the predetermined criterion may be that the detection result is the fastest and the uplink signal quality of the UE is higher than a certain threshold, and the candidate cell with the fastest detection result and the uplink signal quality of the UE is higher than a certain threshold is selected as the target cell. Because the detection of the cell closest to the UE is generally the fastest. This way you can speed up the process of switching.
- the measurement quantity of the signal quality can be pre-agreed, such as the uplink signal to noise ratio, reception, and the like. Specifically, if the target node only receives the detection result of one candidate cell, and the other candidate cells detect the failure or no response, the candidate cell of the unique feedback detection result may be determined as the target cell.
- the second link setup request message may be an existing radio link setup request message, used to initiate a handover to the target cell, and instruct the target cell to prepare radio link resources.
- the target node may also send a detection indication to the candidate cell by using the first link setup request message, so the steps 101-102 may also be implemented as follows:
- the first link setup request message is a radio link setup request message that carries the detection indication after the detection indication is added to the existing radio link setup request message.
- the first link setup request message may initiate a handover to the candidate cell, indicating that the candidate cell prepares the radio link resource.
- the candidate cell is also instructed to detect the signal quality of the UE to be handed over.
- the detection result may be an indication that the UE is detected, or the UE is not detected. Further, it may indicate that the uplink signal quality of the UE is higher than a certain threshold.
- the test results can also contain specific measurements.
- the first link setup response message is a radio link setup response message carrying the detection result obtained after the detection result is added to the existing radio link setup response message.
- the first link setup response message is sent by the candidate cell to the target node, and the target node may be notified that the radio link resource has been prepared, and the detection result is also sent to the target node.
- the link setup failure message may indicate that the uplink signal quality of the UE or the UE is not detected to be lower than a certain threshold.
- the method of selecting the target cell from the candidate cells according to the detection result is the same as the method in step 203, and the measured measurement amount and the predetermined criterion for judging the signal quality may be defined in advance.
- the detection indication sent by the first link setup request message is performed, and the candidate cell not only completes the detection process, but also prepares resources, such as an interface, a signaling point, and a bandwidth, required for the handover. . Therefore, in order to prevent waste of resources, the target node may send a link deletion request to the other candidate cells if the radio resource resources have been prepared for the UE other than the target cell after determining the target cell. The message notifies the candidate cell that has prepared the radio link resource to cancel the allocated radio link resource, so that the candidate cell releases the resources for other services.
- Another embodiment of the present invention further provides a method for selecting a target cell, which can be applied to a base station side, as shown in FIG. 5.
- the detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of the uplink frequency of the UE, configuration information of the discontinuous transmission of the UE, and uplink dedicated physics of the UE.
- Intra-frame timing offset information of the control channel, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE uplink measurement amount, detection duration, continuous detection time, reporting threshold, detection request identifier, source cell Information, etc., the information included in the detection indication includes but is not limited to the above content, and the content of the detection indication may be added or modified according to actual conditions. Its The instructions that he does not list are the same as those in the first embodiment, and will not be described again.
- the candidate cell may detect the UE according to the configuration information of the UE included in the detection indication, for example, the uplink scrambling code of the UE to be switched, and may also calculate the uplink signal frame of the UE according to the uplink frequency information of the UE and the intra-frame timing offset information.
- the starting position is to synchronize the detection signal with the uplink signal of the UE.
- the candidate cell may also perform quality detection of discontinuous transmission to the UE when the UE is in a discontinuous transmission state.
- the candidate cell may further configure the detection parameter according to other information in the detection indication, and send the measurement result according to the measurement quantity indicated in the detection indication.
- the detection result may be included in the detection specific response message, or may be sent to the target node in the first link setup response message, or may be sent to the target node through the link establishment failure message or the detection failure message.
- the detection result may include one or more of the following information: presence/absence of an indication of the detected UE, signal strength of the uplink DPCCH, signal to noise ratio SIR of the uplink DPCCH, an indication exceeding a predefined threshold, a duration of detection, and the like.
- the information contained in the detection result may be referred to in Table 3.
- the content of the information in the detection result may be added or modified according to the actual situation, which is not limited by the embodiment of the present invention.
- Another way of detecting the detection result is to send only the agreed-only dedicated response message, and the message may not include any of the foregoing detection results, and the target node is considered to be detecting the uplink of the UE as long as the target node receives the agreed-specific response message. Signal quality exceeds a certain threshold.
- the method for selecting the target cell may further include:
- step 404 Determine, according to the detection result, whether the detection result is sent to the target node. If the detection result indicates that the uplink signal quality of the UE is not lower than the specified threshold, perform step 405; if the detection result indicates the uplink signal quality of the UE. If the threshold is lower than the specified threshold, step 406 is performed.
- the candidate cell After receiving the detection indication sent by the target node, the candidate cell detects the uplink signal quality of the UE to be switched according to the information and the configuration parameter in the detection indication. The candidate cell may select whether to feed back the detection result to the target node according to the detection result.
- the detection result is sent to the target node; if the uplink signal quality of the UE is lower than the specified threshold, the candidate cell may not The target node sends the detection result, or sends the result of the detection failure to the target node to reduce the calculation amount of the target node.
- the candidate cell may send the detection result to the target node by using different message forms in different application scenarios. For example, if the target node detects the detection indication sent by the dedicated message, the candidate cell carries the detection result in the detection-specific response message and sends it to the target node. If the target node passes the detection indication sent by the first link setup request message, the candidate cell carries the detection result in the first link setup response message and sends the result to the target node.
- Another way of detecting the detection result is to send only the first link setup response message, the message may not include any of the foregoing detection results, and the target node considers the detection as soon as it receives the first link setup response message.
- the uplink signal quality to the UE exceeds a certain threshold.
- the detection result may not be sent to the target node, or the detection failure message may be sent to the target node, or sent to the target node.
- Link establishment failure message The link establishment failure message and the failure detection message may also include the detection result.
- the candidate cell detects the UE according to the related configuration information of the UE included in the detection indication. However, if the signal of the UE is still not detected within the maximum detection duration, the detection failure message or the link establishment failure message may be sent to the target node. Alternatively, if the candidate cell detects the uplink signal quality of the UE and finds that the signal quality is lower than the predetermined standard and cannot guarantee good service, the detection result may not be sent to the target node, and the target node may automatically eliminate the detection result after receiving the detection result.
- the candidate cell detects the uplink signal quality of the UE and finds that the signal quality is lower than the predetermined standard and cannot guarantee good service, the detection result may not be sent to the target node, and the target node may automatically eliminate the detection result after receiving the detection result.
- Another embodiment of the present invention provides a method for selecting a target cell, which can be applied to a base station side, as shown in FIG.
- the detection result may be sent to the target node by detecting the dedicated response message, so the steps 401-403 may also be implemented as follows:
- the candidate cell receives the target node to send a detection dedicated message, parses the detection indication from the detection dedicated message, and detects the UE to be handed over by using the relevant configuration information included in the detection indication.
- the measurement result is carried in the detection dedicated response message and sent to the target node.
- the information of the measurement results may be one or more of Table 3.
- the measurement quantity of the UE included in the detection result may be pre-agreed by the target node and the candidate cell, or may be determined from the detection indication.
- the measurement quantity may be a signal to noise ratio of the uplink signal of the UE, etc., and the implementation of the present invention This example does not limit this.
- the base station may also send the detection result to the target node by using the first link setup response message, so the steps 401-403 may also be implemented as follows:
- the first link setup request message is sent by the target node to the candidate cell, and is a radio link setup request message carrying the detection indication obtained after the detection indication is added to the existing wireless link setup request message.
- the candidate cell After receiving the first link setup request message, the candidate cell not only prepares the corresponding radio link resource, but also detects the uplink signal quality of the UE to be handed over.
- the candidate cell may prepare the radio link resource for the U E after detecting that the uplink quality of the U E is above a certain threshold.
- the first link setup response message is sent by the candidate cell to the target node, and is a radio link setup response message carrying the detection result after the detection result is added to the existing radio link setup response message. .
- the first link setup response message is sent by the candidate cell to the target node, and the target node may be notified of the relevant resources that are ready for handover, and the detection result is also sent to the target node.
- Delete the prepared radio link resource according to the link deletion request message sent by the target node For example, in a handover, two candidate cells are candidate cell 1 and candidate cell 2 respectively. If the target node finds that the signal quality of the candidate cell 1 is high according to the detection result, the candidate cell 1 is determined as the target cell, and the candidate is made. The cell 1 completes the subsequent handover work. If candidate cell 2 has been cut for this time After the allocated radio link resources are exchanged, the target node may send a link deletion request message to the candidate cell 2. After receiving the link deletion request message, the candidate cell 2 deletes the prepared radio link resources and releases the resources. For other services.
- Another embodiment of the present invention provides a method for selecting a target cell, which can be applied to a source node side, as shown in FIG.
- the multiple candidate cells may detect the signal quality of the UE to select the target cell with good signal quality, and therefore the detection indication sent by the target node to the candidate cell is included.
- the source node is a controller of the serving cell where the UE to be switched is located, and may obtain an uplink scrambling code of the UE, a target cell scrambling code, and related configuration information of the UE, and the source control may send the configuration information to the handover request message.
- the target node can also deliver messages through dedicated configuration information or through system messages to the target node.
- the target node may generate the detection indication according to the received related configuration information, and send the detection indication to the candidate cell.
- the handover request message may further include: a detection request identifier.
- the detection request identifier is used to indicate that the target node performs uplink signal quality detection on the UE.
- the detection request identifier may be added to the handover request message to indicate whether the target node needs to determine the target cell by detecting the signal quality of the UE.
- the detection identifier may be a Boolean cell, or a target cell identifier, or a target cell scrambling code. It is also possible to determine whether the target cell is to be determined by detecting the signal quality of the UE by detecting whether the presence of the identification is present, and when the detection request identifier is present, it is not necessary when the detection request identifier does not exist.
- the target node may not detect the signal quality of the candidate cell. , complete the switch directly according to the normal process.
- Another embodiment of the present invention provides a target node, as shown in FIG. 10, including: a detecting unit 81 and a cell determining unit 82.
- the detecting unit 81 is configured to send a detection indication to the candidate cell, and receive a detection result sent by the candidate cell, where the detection indication is used to indicate that the candidate cell detects the uplink signal quality of the user equipment UE.
- the cell determining unit 82 is configured to determine a target cell according to the detection result received by the detecting unit 81.
- the detecting unit 81 may include: a dedicated message sending module 811 and a dedicated feedback receiving module 812.
- the dedicated message sending module 811 is configured to send a detection dedicated message to the candidate cell, where the detection dedicated message carries the detection indication.
- the dedicated feedback receiving module 812 is configured to receive the detection specific response message sent by the candidate d, the area, where the detection specific response message includes the detection result.
- the detecting unit 81 may further include: a first message sending module 813 and a first feedback receiving module 814.
- the first message sending module 813 is configured to send a first link setup request message to the candidate cell, where the first link setup request message carries the detection indication.
- the first feedback receiving module 814 is configured to receive a first link setup response message sent by the candidate cell, where the first link setup response message includes the detection result.
- the cell determining unit 82 is further configured to: select, according to the detection result, a candidate cell with the fastest response whose signal quality exceeds a predetermined threshold as the target cell.
- the cell determining unit 82 is further configured to: select, according to the detection result, a candidate cell with the highest signal quality as the target cell.
- the target node may further include: deleting the unit
- the deleting unit 83 is configured to send a link deletion request message to other candidate cells other than the target cell that have prepared radio link resources for the U E, so that the other candidate cells release the radio link resources prepared for the U E.
- the target node may further include: a source receiving unit 84, a candidate unit 85, and a normal switching unit 86.
- the source receiving unit 84 is configured to send, by the detecting unit 81, a detection indication to the candidate cell, and before receiving the detection result sent by the candidate cell, determine whether to detect the UE according to the detection identifier carried in the handover request message sent by the source node. Uplink signal quality.
- the candidate unit 85 is configured to determine, according to the handover request message, the candidate cell when the source receiving unit 84 determines that the handover request message carries the detection identifier.
- the detecting unit 81 is further configured to send a detection indication to the candidate cell after the candidate unit 85 determines the candidate cell.
- the normal switching unit 86 is configured to complete the handover according to the normal handover procedure when the source receiving unit 84 determines that the detection identifier is not carried in the handover request message.
- the detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of an uplink frequency of the UE, configuration information of discontinuous transmission of the UE, and UE information.
- Another embodiment of the present invention further provides a base station, as shown in FIG. 14, comprising: a receiving unit 91, an uplink detecting unit 92, and a feedback unit 93.
- the receiving unit 91 is configured to receive a detection indication sent by the target node.
- the uplink detecting unit 92 is configured to detect an uplink signal quality of the user equipment UE according to the detection indication.
- the feedback unit 93 is configured to send a detection result to the target node.
- the receiving unit 91 includes: a dedicated receiving module 911.
- the dedicated receiving module 911 is configured to receive a detection dedicated message sent by the target node, where the detection dedicated message carries the detection indication.
- the feedback unit 93 is further configured to: send a detection specific response message to the target node, where the detection specific response message includes the detection result.
- the base station may further include: a second response unit 94.
- the second response unit 94 is configured to determine whether the uplink signal quality of the UE is lower than a specified threshold before the feedback unit 93 sends the detection result to the target node.
- the feedback unit 93 is further configured to: when the UE uplink signal quality is not lower than a specified threshold, perform the sending a detection specific response message to the target node.
- the feedback unit 93 is further configured to: when the uplink signal quality of the UE is lower than a specified threshold, as shown in FIG. 16, in another implementation scenario of the embodiment of the present invention, the receiving unit 91 includes: A receiving module 912.
- the first receiving module 912 is configured to receive a first link setup request message sent by the target node, where the first link setup request message carries the detection indication.
- the feedback unit 93 is further configured to: prepare a corresponding radio link resource, and send a first link setup response message to the target node, where the first link setup response message includes the detection result.
- the base station may further include: a first response unit 95.
- the first response unit 95 is configured to determine, according to the detection result, whether to send the detection result to the target node before the feedback unit 93 sends the detection result to the target node.
- the feedback unit 93 is further configured to: when the uplink signal quality of the UE is not lower than a specified threshold, the feedback unit 93 is further configured to: when the uplink signal quality of the UE is lower than a specified threshold, The target node sends a first link setup response message, or sends a link setup failure message to the target node.
- the base station may further include: a resource deleting unit 96.
- the resource deleting unit 96 is configured to delete the prepared radio link resource if the link deletion request message sent according to the target node is received after the feedback unit 93 sends the detection result to the target node.
- the detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of the uplink frequency of the UE, configuration information of the discontinuous transmission of the UE, and uplink dedicated physics of the UE. Intra-frame timing offset information of the control channel, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE uplink measurement amount, detection duration, continuous detection time, upper threshold, detection request identifier.
- Another embodiment of the present invention further provides a source node, as shown in FIG. 17, including: a handover request unit 1001.
- the handover request unit 1001 is configured to send a handover request message to the target node according to the measurement report on the UE, where the handover request message includes a detection indication.
- the detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of the uplink frequency of the UE, configuration information of the discontinuous transmission of the UE, and uplink dedicated physics of the UE.
- the handover request message may further include: a detection request identifier, where the detection request identifier is used to indicate that the target node performs uplink signal quality detection on the UE.
- Another embodiment of the present invention further provides a system for selecting a target cell, as shown in FIG. 18, including: a target node 1101, a base station 1102, and a source node 1103.
- the source node 1103 is configured to send a handover to the target node 1101 according to the measurement report reported by the UE. Request message.
- the target node 1101 is configured to send a detection indication to the candidate cell, and receive a detection result that is sent by the candidate cell, where the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE, and is determined according to the detection result.
- Target cell is configured to send a detection indication to the candidate cell, and receive a detection result that is sent by the candidate cell, where the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE, and is determined according to the detection result.
- the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE, and is determined according to the detection result.
- Target cell is configured to send a detection indication to the candidate cell, and receive a detection result that is sent by the candidate cell, where the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE, and is determined according to the detection result.
- the base station 1102 is configured to receive a detection indication sent by the target node 1101, detect an uplink signal quality of the user equipment UE according to the detection indication, and send a detection result to the target node 1101.
- the target node, the source node, the base station, and the system for selecting the target cell by allowing the candidate cell to detect the uplink signal quality of the UE to be handed over, select a candidate cell whose signal quality reaches a predetermined standard from the candidate cell according to the detection result.
- the target cell can improve the success rate of the handover, and can select the target cell with higher signal quality for the UE.
- the present invention mainly determines the target cell by detecting the uplink quality of the UE, and can also be used for other scenarios that need to be similar to the handover scenario.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the modules or units is only a logical function division.
- there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
- the components displayed by the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
- the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
- the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like. The medium of the code.
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Abstract
The present invention relates to the technical field of communications. Disclosed are a method, node, and system for selecting a target cell, capable of selecting as the target cell for a user equipment (UE) a candidate cell reaching a predetermined standard of signal quality. The method of the present invention comprises: transmitting a measurement instruction to the candidate cell, wherein the measurement instruction is used for instructing the candidate cell to measure the uplink signal quality of the UE (101); receiving the measurement result transmitted by the candidate cell, and determining the target cell on the basis of the measurement result (102). The present invention is mainly for use in a UE handover process.
Description
选择目标小区的方法、 节点及系统 本申请要求于 2011年 12月 30日提交中国专利局、 申请号为 Method, node and system for selecting a target cell The application is submitted to the Chinese Patent Office on December 30, 2011, and the application number is
201110456492.1、 发明名称为"选择目标小区的方法、 节点及系统"的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。 The priority of the Chinese patent application entitled "Method, Node and System for Selecting a Target Cell" is incorporated herein by reference.
技术领域 Technical field
本发明涉及无线通信领域, 尤其涉及一种选择目标小区的方法、 节点及系 统。 The present invention relates to the field of wireless communications, and in particular, to a method, a node, and a system for selecting a target cell.
背景技术 Background technique
无线通信领域面临着数据业务爆炸增长的压力, 为了提高网络容量和降低 传输成本, 业内提出了一种异构网络( Heterogeneous Network , Hetnet )技术。 Hetnet由多个不同大小、 不同类型的小区一起构成, 包括: 宏小区( Macro cell ) 和微类小区。 其中微类小区包括: 微小区 (Micro cell )、 微微小区 (Pico Cell )、 毫微微小区 ( Femto Cell )、 远端射频头 ( Remote Radio Head, RRH )形态的小 区等。 通过为话务密集的区域部署更多的微类小区, 可以有效提高该区域的网 络容量, 并且微类小区因规模较小, 其建设成本(Capital Expenditure, Capax ) 和运营成本 ( Operating Expense, Opex )都比较低, 因此 Hetnet受到众多运营 商的重视, 是无线网络演进的一个重要方向。 The wireless communication field is under pressure from the explosive growth of data services. In order to improve network capacity and reduce transmission costs, the industry has proposed a heterogeneous network (Hetneteous Network, Hetnet) technology. The Hetnet is composed of a plurality of cells of different sizes and types, including: a macro cell and a micro cell. The micro-class cell includes: a micro cell, a pico cell, a Femto cell, and a remote radio head (RRH). By deploying more micro-class cells for traffic-intensive areas, the network capacity of the area can be effectively increased, and the micro-class cells are smaller in size, their construction costs (Capital Expenditure, Capax) and operating costs (Operating Expense, Opex). ) are relatively low, so Hetnet is valued by many operators and is an important direction for the evolution of wireless networks.
现有技术中, 当 UE要从宏小区切换到微类小区时, 由于传统的用户设备 In the prior art, when a UE wants to switch from a macro cell to a micro cell, due to the traditional user equipment
( User Equipment, UE )不具备读取邻区系统信息的能力, 只能向源控制上报目 标小区的扰码, 而不会上报目标小区标识。 而宏小区的微类邻区数量很多, 可 供微类小区使用的扰码很有限, 因此多个微类小区很可能重用相同的扰码 (User Equipment, UE) does not have the ability to read the information of the neighboring cell system. It can only report the scrambling code of the target cell to the source control, but does not report the target cell identity. However, the number of micro-class neighboring cells of the macro cell is large, and the scrambling code available for the micro-cell is limited, so multiple micro-cells are likely to reuse the same scrambling code.
( Primary Scrambling Code , PSC )„ ( Primary Scrambling Code , PSC )
因此, 目标节点收到目标小区的扰码时, 该扰码可能对应有多个微类小区, 无法确定目标小区。 源节点根据该扰码与所有相邻微类小区的扰码比对, 并向 与该扰码匹配的微类小区之一发送链路建立请求消息, 很可能会导致切换到错 误的小区, 难以保证成功地将 UE切换到信号质量较高的目标小区。
发明内容 Therefore, when the target node receives the scrambling code of the target cell, the scrambling code may correspond to multiple micro-class cells, and the target cell cannot be determined. The source node compares the scrambling code with the scrambling code of all neighboring micro-class cells, and sends a link establishment request message to one of the micro-class cells matching the scrambling code, which may cause handover to the wrong cell, which is difficult It is guaranteed that the UE is successfully switched to the target cell with higher signal quality. Summary of the invention
本发明的多个方面提供一种选择目标小区的方法、 节点及系统, 能够为 UE 选择信号质量较高的目标小区。 Aspects of the present invention provide a method, a node, and a system for selecting a target cell, which are capable of selecting a target cell with a higher signal quality for the UE.
本发明的一方面提供一种选择目标小区的方法, 应用于目标节点侧, 包括: 向候选小区发送检测指示, 其中所述检测指示用于指示候选小区检测用户 设备 UE的上行信号质量; An aspect of the present invention provides a method for selecting a target cell, which is applied to a target node side, and includes: sending a detection indication to a candidate cell, where the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE;
接收所述候选小区发送的检测结果, 根据所述检测结果确定合适的目标小 区。 And receiving a detection result sent by the candidate cell, and determining a suitable target cell according to the detection result.
本发明的另一方面提供一种选择目标小区的方法, 应用于基站侧, 包括: 接收目标节点发送的检测指示; Another aspect of the present invention provides a method for selecting a target cell, which is applied to a base station side, and includes: receiving a detection indication sent by a target node;
根据所述检测指示检测用户设备 UE的上行信号质量; Detecting, according to the detection indication, an uplink signal quality of the user equipment UE;
向所述目标节点发送检测结果。 Sending a detection result to the target node.
本发明的另一方面提供一种选择目标小区的方法, 应用于源节点侧, 包括: 根据 UE上报的测量报告向目标节点发送切换请求消息,所述切换请求消息 中包含检测指示。 Another aspect of the present invention provides a method for selecting a target cell, which is applied to a source node side, and includes: sending a handover request message to a target node according to a measurement report reported by the UE, where the handover request message includes a detection indication.
本发明的另一方面提供一种目标节点, 包括: Another aspect of the present invention provides a target node, including:
检测单元, 用于向候选小区发送检测指示, 接收所述候选小区发送的检测 结果, 其中所述检测指示用于指示候选小区检测用户设备 UE的上行信号质量; 小区确定单元, 用于根据所述检测单元接收的所述检测结果确定目标小区。 本发明的另一方面提供一种基站, 包括: a detecting unit, configured to send a detection indication to the candidate cell, and receive a detection result sent by the candidate cell, where the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE, and the cell determining unit is configured to The detection result received by the detecting unit determines a target cell. Another aspect of the present invention provides a base station, including:
接收单元, 用于接收目标节点发送的检测指示; a receiving unit, configured to receive a detection indication sent by the target node;
上行检测单元, 用于根据所述检测指示检测用户设备 UE的上行信号质量; 反馈单元, 用于向所述目标节点发送检测结果。 An uplink detecting unit, configured to detect an uplink signal quality of the user equipment UE according to the detection indication, and a feedback unit, configured to send a detection result to the target node.
本发明的另一方面提供一种源节点, 包括: Another aspect of the present invention provides a source node, including:
切换请求单元, 用于根据 UE上报的测量报告向目标节点发送切换请求消 息, 所述切换请求消息中包含检测指示。 The handover requesting unit is configured to send a handover request message to the target node according to the measurement report reported by the UE, where the handover request message includes a detection indication.
本发明的另一方面提供一种选择目标小区的系统, 包括: 目标节点、 基站 以及源节点; Another aspect of the present invention provides a system for selecting a target cell, including: a target node, a base station, and a source node;
所述源节点, 用于根据 UE上报的测量报告向目标节点发送切换请求消息; 所述目标节点, 用于向候选小区发送检测指示, 接收所述候选小区发送的 检测结果,其中所述检测指示用于指示候选小区检测用户设备 UE的上行信号质
量; 根据所述检测结果确定目标小区; The source node is configured to send a handover request message to the target node according to the measurement report reported by the UE, where the target node is configured to send a detection indication to the candidate cell, and receive a detection result sent by the candidate cell, where the detection indication is Used to indicate that the candidate cell detects the uplink signal quality of the user equipment UE A quantity; determining a target cell according to the detection result;
所述基站, 用于接收目标节点发送的检测指示; 根据所述检测指示检测用 户设备 UE的上行信号质量; 向所述目标节点发送检测结果。 The base station is configured to receive a detection indication sent by the target node, detect an uplink signal quality of the user equipment UE according to the detection indication, and send a detection result to the target node.
上述描述的选择目标小区的方法、 节点及系统, 通过让候选小区检测待^: 换 UE的上行信号质量,根据检测结果从候选小区中选择信号质量达到预定标〉 的候选小区作为目标小区, 与现有技术中任意选择候选小区之一作为目标小区 的方法相比,可以保提高切换的成功率, 能够为 UE选择信号质量较高的目标' 区。 The method, the node and the system for selecting a target cell described above, by causing the candidate cell to detect the uplink signal quality of the UE to be changed, and selecting a candidate cell whose signal quality reaches a predetermined target from the candidate cell according to the detection result, as the target cell, and Compared with the method for arbitrarily selecting one of the candidate cells as the target cell in the prior art, the success rate of the handover can be improved, and the target 'region with higher signal quality can be selected for the UE.
附图说明 DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实^ 例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描 ¾ 中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不刊 出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。 In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the actual examples or the description of the prior art will be briefly described below. Obviously, the following description is attached. The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without the publication of creative labor.
图 1为本发明一实施例中的选择目标小区的方法流程图; FIG. 1 is a flowchart of a method for selecting a target cell according to an embodiment of the present invention;
图 2为本发明另一实施例中的选择目标小区的方法流程图; 2 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention;
图 3为本发明另一实施例中的选择目标小区的方法流程图; 3 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention;
图 4为本发明另一实施例中的选择目标小区的方法流程图; 4 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention;
图 5为本发明另一实施例中的选择目标小区的方法流程图; FIG. 5 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention;
图 6为本发明另一实施例中的选择目标小区的方法流程图; 6 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention;
图 7为本发明另一实施例中的选择目标小区的方法流程图; FIG. 7 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention;
图 8为本发明另一实施例中的选择目标小区的方法流程图; FIG. 8 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention;
图 9为本发明另一实施例中的选择目标小区的方法流程图; FIG. 9 is a flowchart of a method for selecting a target cell according to another embodiment of the present invention;
图 10为本发明另一实施例中的目标节点组成示意图; FIG. 10 is a schematic diagram showing the composition of a target node according to another embodiment of the present invention; FIG.
图 11为本发明另一实施例中的目标节点组成示意图; 11 is a schematic diagram of a composition of a target node in another embodiment of the present invention;
图 12为本发明另一实施例中的目标节点组成示意图; FIG. 12 is a schematic diagram of a composition of a target node according to another embodiment of the present invention; FIG.
图 13为本发明另一实施例中的目标节点组成示意图; 13 is a schematic diagram showing the composition of a target node in another embodiment of the present invention;
图 14为本发明另一实施例中的基站组成示意图; 14 is a schematic structural diagram of a base station according to another embodiment of the present invention;
图 15为本发明另一实施例中的基站组成示意图; 15 is a schematic structural diagram of a base station according to another embodiment of the present invention;
图 16为本发明另一实施例中的基站组成示意图; 16 is a schematic structural diagram of a base station according to another embodiment of the present invention;
图 17为本发明另一实施例中的源节点组成示意图;
图 18本发明另一实施例中的选择目标小区的系统组成示意图。 17 is a schematic structural diagram of a source node according to another embodiment of the present invention; FIG. 18 is a schematic structural diagram of a system for selecting a target cell in another embodiment of the present invention.
具体实施方式 detailed description
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。 BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.
本文中描述的技术可用于各种通信系统, 例如当前 2G, 3G通信系统和下 一代通信系统, 例如全球移动通信系统( GSM , Global System for Mobile communications ), 码分多址 ( CDMA, Code Division Multiple Access ) 系统, 时 分多址(TDMA Time Division Multiple Access )系统, 宽带码分多址( WCDMA, Wideband Code Division Multiple Access Wireless ), 频分多址 ( FDMA, Frequency Division Multiple Addressing ) 系统, 正交频分多址( OFDMA, Orthogonal Frequency-Division Multiple Access ) 系统, 单载波 FDMA ( SC-FDMA ) 系统, 通用分组无线业务( GPRS, General Packet Radio Service )系统, 长期演进( LTE, Long Term Evolution ) 系统, 以及其他此类通信系统。 The techniques described herein can be used in a variety of communication systems, such as current 2G, 3G communication systems and next generation communication systems, such as Global System for Mobile Communications (GSM), Code Division Multiple Access (CDMA, Code Division Multiple). Access system, time division multiple access (TDMA Time Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA), Frequency Division Multiple Access (FDMA), Frequency Division Multiple Addressing (OFDM) system, Orthogonal Frequency Division OFDMA (Orthogonal Frequency-Division Multiple Access) system, single carrier FDMA (SC-FDMA) system, General Packet Radio Service (GPRS) system, Long Term Evolution (LTE) system, and Other such communication systems.
本文中结合终端和 /或基站和 /或基站节点来描述各种方面。 Various aspects are described herein in connection with a terminal and/or base station and/or base station node.
用户设备, 可以是无线终端也可以是有线终端, 无线终端可以是指向用户 提供语音和 /或数据连通性的设备, 具有无线连接功能的手持式设备、 或连接到 无线调制解调器的其他处理设备。 无线终端可以经无线接入网 (例如, RAN, Radio Access Network )与一个或多个核心网进行通信, 无线终端可以是移动终 端, 如移动电话(或称为"蜂窝"电话)和具有移动终端的计算机, 例如, 可以是 便携式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置, 它们与无线接 入网交换语言和 /或数据。 例如, 个人通信业务(PCS, Personal Communication Service ) 电话、 无绳电话、 会话发起协议(SIP )话机、 无线本地环路 ( WLL, Wireless Local Loop )站、 个人数字助理(PDA, Personal Digital Assistant )等设 备。 无线终端也可以称为系统、 订户单元( Subscriber Unit )、 订户站( Subscriber Station ), 移动站( Mobile Station )、 移动台( Mobile )、 远程站( Remote Station )、 接入点 (Access Point )、 远程终端 ( Remote Terminal )、 接入终端 (Access Terminal )、 用户终端( User Terminal )、 用户代理( User Agent )、 用户设备 ( User Equipment )。 4
基站(例如, 接入点)可以是指接入网中在空中接口上通过一个或多个扇 区与无线终端通信的设备。 基站可用于将收到的空中帧与 IP分组进行相互转 换, 作为无线终端与接入网的其余部分之间的路由器, 其中接入网的其余部分 可包括网际协议(IP )网络。 基站还可协调对空中接口的属性管理。 例如, 基站 可以是 GSM或 CDMA中的基站 ( BTS, Base Transceiver Station ), 也可以是 WCDMA中的基站( NodeB ), 还可以是 LTE中的演进型基站 ( NodeB或 eNB 或 e-NodeB , evolutional Node B ) , 本发明并不限定。 The user equipment, which may be a wireless terminal or a wired terminal, may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem. The wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal The computers, for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), etc. . A wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Equipment. 4 A base station (e.g., an access point) can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.
基站控制器 (源节点或目标节点 ), 可以是 GSM或 CDMA中的基站控制器 ( BSC, base station controller l 也可以是 WCDMA中的无线网络控制器( RNC, Radio Network Controller ) , 本发明并不限定。 The base station controller (source node or target node) may be a base station controller in GSM or CDMA (BSC, base station controller l may also be a radio network controller (RNC) in WCDMA, and the present invention does not Limited.
另夕卜,本文中术语"系统"和"网络"在本文中常被可互换使用。本文中术语"和 /或", 仅仅是一种描述关联对象的关联关系, 表示可以存在三种关系, 例如, A 和 /或 B, 可以表示: 单独存在 A, 同时存在 A和 B, 单独存在 B这三种情况。 另外, 本文中字符 "/" , 一般表示前后关联对象是一种 "或" 的关系。 In addition, the terms "system" and "network" are used interchangeably herein. The term "and/or" in this article is merely an association describing the associated object, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists separately, and both A and B exist, exist alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.
本发明一实施例提供一种选择目标小区的方法, 可应用于源节点侧, 如图 1 所示。 An embodiment of the present invention provides a method for selecting a target cell, which can be applied to a source node side, as shown in FIG.
101、 向候选小区发送检测指示, 其中所述检测指示用于指示候选小区检测 用户设备 UE的上行信号质量。 101. Send a detection indication to the candidate cell, where the detection indication is used to indicate that the candidate cell detects the uplink signal quality of the user equipment UE.
其中, 所述检测指示可以在目标节点与候选小区建立无线链路之前, 通过 专用检测消息发送; 也可以在目标节点与候选小区建立无线链路的过程中, 通 过第一链路建立请求消息发送。 所述候选小区可以由多个小区组成, 可以是使 用相同频率和相同扰码的多个微类小区, 也可以是使用相同扰码且和源小区都 相邻的微类小区, 还可以通过其他形式获取的多个小区组成的小区集合, 对于 候选小区的划分方式, 本发明实施例不做限定。 The detection indication may be sent by using a dedicated detection message before the target node establishes a radio link with the candidate cell; or may be sent by the first link setup request message during the process of establishing a radio link between the target node and the candidate cell. . The candidate cell may be composed of multiple cells, may be multiple micro-class cells using the same frequency and the same scrambling code, or may be a micro-class cell that uses the same scrambling code and is adjacent to the source cell, and may also pass other A cell set consisting of a plurality of cells obtained in a form is not limited in the embodiment of the present invention.
102、接收所述候选小区发送的检测结果,根据所述检测结果确定目标小区。 具体的, 可以通过候选小区发送的检测结果从候选小区中选择一个高于指 定门限的信号质量的小区, 或者从候选小区中选择一个信号质量超过一定门限 且返回最快的小区,或者从候选小区中选择最高的信号质量的小区作为 UE切换 的目标小区。 当然, 还可以根据其他预定标准选择目标小区, 对于所述预定标 准本发明实施例不做限定。 102. Receive a detection result sent by the candidate cell, and determine a target cell according to the detection result. Specifically, a cell with a signal quality higher than a specified threshold may be selected from candidate cells by using a detection result sent by the candidate cell, or a cell with a signal quality exceeding a certain threshold and returning the fastest, or a candidate cell may be selected from the candidate cells. The cell with the highest signal quality is selected as the target cell for UE handover. Of course, the target cell may also be selected according to other predetermined criteria, which is not limited in the embodiment of the present invention.
进一步的, 如图 2所示, 为了兼容现有的其他切换机制, 若切换请求消息
指向了一个明确的目标小区, 则可以不进行信号质量检测的相关操作, 直接按 照正常流程完成切换。 因此, 在执行步骤 101之前, 还可以包括: Further, as shown in FIG. 2, in order to be compatible with other existing switching mechanisms, if the handover request message is If you point to an explicit target cell, you can complete the switch according to the normal process without performing related operations on signal quality detection. Therefore, before performing step 101, the method may further include:
103、 根据源节点发送的切换请求消息中携带的检测指示, 判断是否检测 UE的上行信号质量; 若所述切换请求消息中携带有所述检测指示, 则执行步骤 104; 若所述切换请求消息中未携带所述检测指示, 则执行步骤 105。 And determining, according to the detection indication carried in the handover request message sent by the source node, whether to detect the uplink signal quality of the UE; if the handover request message carries the detection indication, performing step 104; if the handover request message is If the detection indication is not carried, step 105 is performed.
其中, 切换请求消息可以由源节点通过与目标节点相连的直接接口发送, 也可以由源节点向核心网发送切换请求消息, 再由核心网将该切换请求消息转 发给目标节点。 由于源节点向目标节点发送的切换请求中可以包含检测指示, 所以目标节点可以直接从所述切换请求消息中获取检测指示。 或者也可以由源 节点通过其他方式发送检测指示中的信息内容, 由目标节点获取这些信息内容 生成检测指示并发送给候选小区。 The handover request message may be sent by the source node through a direct interface connected to the target node, or the source node may send a handover request message to the core network, and then the core network forwards the handover request message to the target node. Since the detection request sent by the source node to the target node may include the detection indication, the target node may directly obtain the detection indication from the handover request message. Alternatively, the source node may also send the information content in the detection indication by other means, and the target node acquires the information content to generate a detection indication and sends the detection indication to the candidate cell.
其中, 可以根据该检测指示是否存在来判断是否需要令候选小区检测 U E 的信号质量, 当该检测指示存在时需要根据 U E的上行信号质量确定目标小区; 当该检测指示不存在时则不需要进行上行检测, 直接切换。 另外, 也可以通过 所述检测指示中的检测请求标识确定是否进行上行检测。 例如, 所述检测请求 标识可以是布尔型的标识, 当该检测请求标识为 1时, 目标节点可以令候选小 区检测 UE的信号质量, 并根据检测结果选择合适的目标小区; 当该检测请求标 识为 0时, 目标节点可以直接从切换请求消息中获取目标小区标识, 并将 UE切 换到对应的目标小区。 另外, 还可以通过检测指示中携带的目标小区扰码确定 是否进行上行检测, 例如, 若切换请求消息中携带有目标小区扰码, 则目标节 点可以根据目标小区扰码确定候选小区集合, 并在检测候选小区的信号质量后 选择目标小区; 若切换请求消息中未携带目标小区扰码, 则可以直接按照现有 切换流程完成切换。 或者, 还可以通过检测指示中携带的微类候选小区集合标 识确定是否进行上行检测, 该微类候选小区集合标识由源小区标识的映射值和 目标小区扰码的映射值构成。 可以理解的是, 判断是否进行上行质量检测的检 测指示的形式包括但不局限于以上形式, 还可以是其他形式的标识, 本发明实 施例不再——赘述。 And determining, according to whether the detection indication is present, whether the candidate cell needs to detect the signal quality of the UE, and determining, according to the uplink signal quality of the UE, the target cell when the detection indication exists; and not performing the detection indication when the indication does not exist. Uplink detection, direct switching. In addition, it is also possible to determine whether to perform uplink detection by using the detection request identifier in the detection indication. For example, the detection request identifier may be a Boolean identifier. When the detection request identifier is 1, the target node may enable the candidate cell to detect the signal quality of the UE, and select an appropriate target cell according to the detection result; when the detection request identifier When it is 0, the target node can directly obtain the target cell identifier from the handover request message, and switch the UE to the corresponding target cell. In addition, determining whether to perform uplink detection by detecting the target cell scrambling code carried in the indication, for example, if the handover request message carries the target cell scrambling code, the target node may determine the candidate cell set according to the target cell scrambling code, and After detecting the signal quality of the candidate cell, the target cell is selected; if the target cell scrambling code is not carried in the handover request message, the handover may be completed according to the existing handover procedure. Or determining whether to perform uplink detection by detecting a micro-class candidate cell set identifier carried in the indication, where the micro-class candidate cell set identifier is composed of a mapping value of the source cell identifier and a mapping value of the target cell scrambling code. It can be understood that the form of the detection indication for determining whether to perform the uplink quality detection includes, but is not limited to, the above forms, and may also be other forms of identification, and the embodiments of the present invention are no longer described.
104、 根据所述切换请求消息确定所述候选小区, 并执行所述向候选小区发 送检测指示。 104. Determine the candidate cell according to the handover request message, and execute the sending a detection indication to the candidate cell.
其中, 目标节点可以根据切换请求消息中携带的目标小区扰码, 确定共享 相同扰码的候选小区, 也可以根据切换请求消息中携带的微类小区集合标识确
定候选小区。 候选小区可以有多个, 发送检测指示时, 向多个候选小区中的每 一个小区都发送检测指示。 The target node may determine, according to the target cell scrambling code carried in the handover request message, the candidate cell that shares the same scrambling code, or may be identified according to the micro-class cell collection identifier carried in the handover request message. A candidate cell. There may be multiple candidate cells, and when a detection indication is sent, a detection indication is sent to each of the plurality of candidate cells.
具体的, 确定候选小区的方法可以为: 根据源节点发送的切换请求消息, 若所述请求消息中包含源小区信息则根据确定与源小区相邻的小区为候选小 区。 确定候选小区的方法也可以为: 若所述请求消息中包含目标小区的扰码信 息则确定与收到的扰码信息相匹配的小区为候选小区。 还可以为: 若所述请求 消息中包含目标小区的扰码信息和源小区信息则确定与源小区相邻的、 且与收 到的目标小区扰码相同的小区为候选小区。 Specifically, the method for determining the candidate cell may be: according to the handover request message sent by the source node, if the request message includes the source cell information, determining that the cell adjacent to the source cell is a candidate cell. The method for determining the candidate cell may also be: if the request message includes the scrambling code information of the target cell, determining that the cell that matches the received scrambling code information is a candidate cell. The method may further be: if the request message includes the scrambling code information and the source cell information of the target cell, determining that the cell adjacent to the source cell and having the same scrambling code as the received target cell is the candidate cell.
105、 按照正常切换流程完成切换。 105. Complete the switching according to the normal switching process.
其中,正常切换流程可以是从切换请求消息中获取目标小区标识,将 UE切 换到对应的目标小区; 也可以是获取目标小区扰码, 向目标小区扰码对应的微 类小区之一发送链路建立请求, 完成后续切换, 可以理解的是, 现有技术中还 可以釆取其他的切换流程, 本发明实施例不再——赘述。 The normal handover procedure may be: acquiring the target cell identifier from the handover request message, and switching the UE to the corresponding target cell; or acquiring the target cell scrambling code, and sending the link to one of the micro-class cells corresponding to the target cell scrambling code. The establishment of the request and the completion of the subsequent handover, it can be understood that other handover procedures can be taken in the prior art, and the embodiments of the present invention are not described again.
在本实施例中, 所述检测指示中可以包含以下信息中的至少一个: UE的上 行扰码、 UE的上行频率信息、 UE的上行频率所在的频带信息、 UE的不连续发 送的配置信息、 UE的上行专用物理控制信道的帧内定时偏移信息、 UE的上行 专用物理控制信道的时隙格式信息、 目标小区的扰码、 UE上行测量量、 检测时 长、 连续检测时间、 上报门限等等, 检测指示中包含的信息包括但不局限于以 上所述信号单元 ( Information Element, IE )。 In this embodiment, the detection indication may include at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of an uplink frequency of the UE, configuration information of discontinuous transmission of the UE, Intra-frame timing offset information of the uplink dedicated physical control channel of the UE, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE uplink measurement amount, detection duration, continuous detection time, reporting threshold, etc. The information included in the detection indication includes, but is not limited to, the information element (IE) described above.
具体的, 检测指示可以包含的信息及各个信息的具体含义可以如表 1中所 Specifically, the information that the detection indication can include and the specific meaning of each information can be as shown in Table 1.
IE名称 备注 IE name Remarks
最大检测时长 例如: 40、 60、 80、 100、 120、 Maximum detection duration, for example: 40, 60, 80, 100, 120,
140、 160毫秒等 140, 160 milliseconds, etc.
UE的上行扰码 UE uplink scrambling code
UE的最小上行信道化码长度 Minimum uplink channelization code length of the UE
UE的最大的上行 DPDCH的信道数 The maximum number of uplink DPDCH channels of the UE
UE的打孔限制 UE punch limit
UE的上行传输格式组合集 使用 TS 25.433中的无线链路请求 The UE's uplink transport format combination set uses the radio link request in TS 25.433
UE的上下 DPCCH的时隙格式信息 消息中的 UL DPCH Information IE UL DPCH Information IE in the slot format information of the upper and lower DPCCH of the UE
源小区的上行信号干扰比目标值 的信息 Information about the uplink signal interference of the source cell than the target value
UE的分集模式
源小区的下行功率控制模式 UE diversity mode Downstream power control mode of the source cell
源小区的用于增强 DCH操作的上行专 The uplink cell of the source cell used to enhance DCH operation
用数据信道指示 Indicated by data channel
UE上行 DPCCH帧的起始点相对目标 The starting point of the UE uplink DPCCH frame is relative to the target
小区的 PCCPCH帧的码片偏移 Chip offset of the PCCPCH frame of the cell
UE的上行频点或源小区的下行频点 Uplink frequency of the UE or downlink frequency of the source cell
信息 Information
UE上行频点所在的频带指示信息 Band indication information of the UE uplink frequency point
UE不连续包发送模式的配置信息 UE discontinuous packet transmission mode configuration information
表 1 Table 1
其中, UE不连续包发送模式的配置信息是用于配置对不连续发包的 UE 检测。 为了在 UE处于不连续发包状态时, 釆用对不连续发包状态的检测模 UE不连续包发送模式的配置信息可以包含表 2中的一个或多个参数。 另外, · 以在发起切换前, 源小区通知 UE停止不连续包发送的模式,使得候选小区不' 要基于 UE在不连续包发送的模式来检测 UE。 The configuration information of the UE discontinuous packet transmission mode is used to configure UE detection for discontinuous packet transmission. In order to use the detection mode for the discontinuous packet transmission state when the UE is in the discontinuous packet transmission state, the configuration information of the UE discontinuous packet transmission mode may include one or more parameters in Table 2. In addition, the source cell notifies the UE to stop the mode of discontinuous packet transmission before initiating the handover, so that the candidate cell does not want to detect the UE based on the mode in which the UE transmits in the discontinuous packet.
UE DTX DRX Offset UE DTX DRX Offset
不连续包发送的开始位置 The starting position of the discontinuous packet transmission
Enabling Delay Enabling Delay
延迟从连续发送进入非连续发送的帧数 Delay the number of frames sent from consecutive transmissions to discontinuous transmissions
DTX Information DTX Information
DTX信息 DTX information
CHOICE E-DCH TTI CHOICE E-DCH TTI
CHOICE E-DCH TTI长度 CHOICE E-DCH TTI length
Length Length
若 TTI为 2毫秒 If the TTI is 2 milliseconds
UE DTX Cycle 1 上行 UL DPCCH DTX模式 1下一个 DTX循环的子 帧数 UE DTX Cycle 1 Uplink UL DPCCH DTX Mode 1 Number of sub-frames of the next DTX cycle
UE DTX Cycle 2 上行 UL DPCCH DTX模式 2下一个 DTX循环的子 帧数.(用于 E-DCH没有上行数据发送的情况) UE DTX Cycle 2 Uplink UL DPCCH DTX mode 2 Number of sub-frames of the next DTX cycle. (For E-DCH without uplink data transmission)
MAC DTX Cycle MAC层发送上行 E-DCH数据的循环长度 MAC DTX Cycle MAC layer sends the length of the uplink E-DCH data
若 TTI为 10毫秒 If the TTI is 10 milliseconds
UE DTX Cycle 1 UE DTX Cycle 1 UE DTX Cycle 1 UE DTX Cycle 1
UE DTX Cycle 2 UE DTX Cycle 2 UE DTX Cycle 2 UE DTX Cycle 2
MAC DTX Cycle MAC DTX Cycle MAC DTX Cycle MAC DTX Cycle
Inactivity Threshold 定义多少 E-DCH TTI后, CPC模式从 Inactivity Threshold defines how much E-DCH TTI, CPC mode from
for UE DTX Cycle 2 For UE DTX Cycle 2
UE— DTX— cycle— 1转到 UE— DTX— cycle— 2
UE DTX Long 定义在 UE— DTX— cycle— 2模式下, 开始发送的前 Preamble 导时隙数( UL DPCCH DTX和 DL DRX都用这个 值) UE_DTX_cycle-1 to UE-DTX-cycle-2 UE DTX Long defines the number of pre-Preamble pilot slots to start transmitting in UE-DTX-cycle-2 mode (all values are used for UL DPCCH DTX and DL DRX)
MAC Inactivity 标识启动 E-DCH非活动状态所需的等待时间 MAC Inactivity identifies the wait time required to initiate E-DCH inactivity
Threshold Threshold
CQI DTX Timer 说明收到 HS-DPSCH的数据后, 经过多少子帧 CQI DTX Timer Description How many subframes have passed after receiving the data of the HS-DPSCH
后, 提高上行传送 CQI报告的优先级, 使得即使 在 DTX的间隙也要发送 CQI报告. After that, the priority of the uplink transmission CQI report is increased, so that the CQI report is sent even in the gap of DTX.
UE DPCCH burstl 在 UE— DTX— cycle— 1模式下需要发送子帧数.量 UE DPCCH burstl needs to transmit the number of subframes in UE_DTX_cycle-1 mode.
( UE—DTX— cycle— 1- UE— DPCCH— burst— 1就是不 发送的子帧数) (UE_DTX_cycle_ 1- UE-DPCCH_burst-1 is the number of subframes not transmitted)
UE DPCCH burst2 在 UE— DTX— cycle— 2模式下需要发送子帧数.量 UE DPCCH burst2 needs to transmit the number of subframes in UE_DTX_cycle-2 mode.
( UE—DTX— cycle— 1- UE— DPCCH— burst— 1就是不 发送的子帧数) (UE_DTX_cycle_ 1- UE-DPCCH_burst-1 is the number of subframes not transmitted)
表 2 Table 2
需要说明的是, 在本发明实施例中目标节点向候选小区发送的检测指示中 包含的信息, 包括但不局限于上述形式, 还可以根据实际情况添加或修改相应 内容, 对此本发明实施例不做限定。 并且, 检测指示中包含的信息内容和形式 可以在目标节点上预先配置, 也可以由源节点通过切换请求消息发送给目标节 点, 还可以由核心网下发给目标节点, 具体的检测指示的配置来源方式本发明 实施例也不 ^1限定。 It should be noted that, in the embodiment of the present invention, the information included in the detection indication sent by the target node to the candidate cell includes, but is not limited to, the foregoing content, and the corresponding content may be added or modified according to an actual situation. Not limited. Moreover, the content and the form of the information included in the detection indication may be pre-configured on the target node, or may be sent by the source node to the target node through the handover request message, or may be sent by the core network to the target node, and the configuration of the specific detection indication may be Source Mode The embodiments of the present invention are also not limited to 1.
本发明另一实施例提供一种选择目标小区的方法, 可应用于目标节点侧, 如图 3所示。 在本发明实施例的一种应用场景中, 可以通过检测专用消息发送 所示检测指示, 因此步骤 101-102还可以通过如下方式实现: Another embodiment of the present invention provides a method for selecting a target cell, which can be applied to a target node side, as shown in FIG. In an application scenario of the embodiment of the present invention, the detection indication may be sent by detecting a dedicated message, so the steps 101-102 may also be implemented as follows:
201、 向候选小区发送检测专用消息, 所述检测专用消息中携带有所述检测 指示。 201. Send a detection specific message to the candidate cell, where the detection specific message carries the detection indication.
其中, 在请求候选小区准备无线链路资源之前, 可以先釆用携带有检测指 示的检测专用消息, 指示候选小区检测待切换 UE的上行信号质量。 Before requesting the candidate cell to prepare the radio link resource, the detection dedicated message carrying the detection indication may be used to indicate that the candidate cell detects the uplink signal quality of the UE to be handed over.
202、 接收所述候选小区发送的检测专用响应消息, 所述检测专用响应消息 中包含所述检测结果。 202. Receive a detection-specific response message sent by the candidate cell, where the detection-specific response message includes the detection result.
其中, 所述检测专用响应消息可以包含检测结果的成功响应消息, 也可以 是检测失败的响应消息。 The detection specific response message may include a success response message of the detection result, or may be a response message of the detection failure.
203、 根据所述检测结果, 选择达到预定标准的候选小区作为目标小区。
其中, 检测结果可以是一个指示, 该指示表明检测到 UE。 进一步的可以表 示 UE的上行信号质量高于一定的门限。 检测结果还可以包含具体的测量值。 203. Select, according to the detection result, a candidate cell that meets a predetermined criterion as the target cell. The detection result may be an indication that the UE is detected. Further, it may indicate that the uplink signal quality of the UE is higher than a certain threshold. The test results can also contain specific measurements.
所述检测结果包含以下信息中的至少一个: 超过预定门限的指示、 检测到 UE的指示、 具体的 UE的上行信号的测量值、 检测的时间长度、 连续检测时间 长度。 The detection result includes at least one of the following information: an indication exceeding a predetermined threshold, an indication of detecting the UE, a measurement value of an uplink signal of the specific UE, a length of time of detection, and a length of continuous detection time.
其中, 若目标节点接收到多个候选小区发送的检测结果, 则可以将多个检 测结果进行比较, 选择信号质量达到预定标准的小区作为目标小区。 若目标节 点接收到某个候选小区发送的检测失败的消息, 则可以直接淘汰该检测失败的 候选小区, 从其他候选小区中选择目标小区。 预定标准可以根据实际情况预先 设定, 例如, 该预定标准可以为信号质量最高, 从候选小区中选择信号质量最 高的小区作为目标小区。 或者, 若目标节点在预定时间内没有接收到某个候选 小区的检测结果, 也可以放弃该候选小区, 从其他候选小区中选择目标小区。 另夕卜,预定的标准还可以是发送检测结果最快的且 UE上行信号质量高于一定门 限,选择发送检测结果最快的且 UE上行信号质量高于一定门限的候选小区为目 标小区。 因为最接近 UE的小区的检测一般是最快的。这种方式可以加快切换的 进程。 If the target node receives the detection result sent by the multiple candidate cells, the multiple detection results may be compared, and the cell whose signal quality reaches a predetermined criterion is selected as the target cell. If the target node receives the message that the detection fails to be sent by the candidate cell, the candidate cell that fails the detection may be directly eliminated, and the target cell is selected from the other candidate cells. The predetermined criterion may be preset according to actual conditions. For example, the predetermined criterion may be that the signal quality is the highest, and the cell with the highest signal quality is selected from the candidate cells as the target cell. Alternatively, if the target node does not receive the detection result of a candidate cell within a predetermined time, the candidate cell may be abandoned and the target cell may be selected from other candidate cells. In addition, the predetermined criterion may be that the detection result is the fastest and the uplink signal quality of the UE is higher than a certain threshold, and the candidate cell with the fastest detection result and the uplink signal quality of the UE is higher than a certain threshold is selected as the target cell. Because the detection of the cell closest to the UE is generally the fastest. This way you can speed up the process of switching.
并且, 信号质量的测量量可以预先约定, 例如上行信号信噪比、 接收等。 特殊的, 若目标节点只接收到一个候选小区的检测结果, 其他候选小区均检测 失败或无响应, 则可以将该唯一反馈检测结果的候选小区确定为目标小区。 Moreover, the measurement quantity of the signal quality can be pre-agreed, such as the uplink signal to noise ratio, reception, and the like. Specifically, if the target node only receives the detection result of one candidate cell, and the other candidate cells detect the failure or no response, the candidate cell of the unique feedback detection result may be determined as the target cell.
204、 向所述目标小区发送第二链路建立请求消息, 以便所述目标小区完成 后续切换流程。 204. Send a second link setup request message to the target cell, so that the target cell completes a subsequent handover procedure.
其中, 所述第二链路建立请求消息可以为现有的无线链路建立请求消息, 用于向目标小区发起切换, 指示目标小区准备无线链路资源。 The second link setup request message may be an existing radio link setup request message, used to initiate a handover to the target cell, and instruct the target cell to prepare radio link resources.
如图 4所示, 在本发明实施例的另一种实施场景中, 目标节点也可以通过 第一链路建立请求消息向候选小区发送检测指示,因此步骤 101-102还可以通过 如下方式实现: As shown in FIG. 4, in another implementation scenario of the embodiment of the present invention, the target node may also send a detection indication to the candidate cell by using the first link setup request message, so the steps 101-102 may also be implemented as follows:
301、 向候选小区发送第一链路建立请求消息, 所述第一链路建立请求消息 中携带有所述检测指示。 301. Send a first link setup request message to the candidate cell, where the first link setup request message carries the detection indication.
其中, 所述第一链路建立请求消息为在现有的无线链路建立请求消息中添 加了检测指示后, 得到的携带有检测指示的无线链路建立请求消息。 该第一链 路建立请求消息既可以向候选小区发起切换, 指示候选小区准备无线链路资源
的同时, 还指示候选小区检测待切换 UE的信号质量。 The first link setup request message is a radio link setup request message that carries the detection indication after the detection indication is added to the existing radio link setup request message. The first link setup request message may initiate a handover to the candidate cell, indicating that the candidate cell prepares the radio link resource. At the same time, the candidate cell is also instructed to detect the signal quality of the UE to be handed over.
302、 接收所述候选小区发送的第一链路建立响应消息或链路建立失败消 息, 所述第一链路建立响应消息和链路建立失败消息中包含所述检测结果。 302. Receive a first link setup response message or a link setup failure message sent by the candidate cell, where the first link setup response message and the link setup failure message include the detection result.
其中, 检测结果可以是一个指示, 该指示表明检测到 UE, 或未检测到 UE。 进一步的可以表示 UE的上行信号质量高于一定的门限。检测结果还可以包含具 体的测量值。 The detection result may be an indication that the UE is detected, or the UE is not detected. Further, it may indicate that the uplink signal quality of the UE is higher than a certain threshold. The test results can also contain specific measurements.
其中, 所述第一链路建立响应消息为在现有的无线链路建立响应消息中添 加了检测结果后, 得到的携带有检测结果的无线链路建立响应消息。 该第一链 路建立响应消息由候选小区发送给目标节点, 既可以通知目标节点已准备无线 链路资源, 还向目标节点发送检测结果。 另外, 所述链路建立失败消息可以指 示没有检测到 UE或者 UE的上行信号质量低于一定的门限等。 The first link setup response message is a radio link setup response message carrying the detection result obtained after the detection result is added to the existing radio link setup response message. The first link setup response message is sent by the candidate cell to the target node, and the target node may be notified that the radio link resource has been prepared, and the detection result is also sent to the target node. In addition, the link setup failure message may indicate that the uplink signal quality of the UE or the UE is not detected to be lower than a certain threshold.
303、 根据所述检测结果选择达到预定标准的候选小区作为目标小区, 完成 后续切换流程。 303. Select, as the target cell, a candidate cell that meets a predetermined criterion according to the detection result, and complete a subsequent handover process.
其中, 根据检测结果从候选小区中选择目标小区的方法与步骤 203中的方 法相同, 可以预先规定检测的测量量和评判信号质量的预定标准。 The method of selecting the target cell from the candidate cells according to the detection result is the same as the method in step 203, and the measured measurement amount and the predetermined criterion for judging the signal quality may be defined in advance.
304、 向除所述目标小区之外的其他候选小区发送链路删除请求消息。 304. Send a link deletion request message to other candidate cells except the target cell.
其中, 由于在本发明实施例中是通过第一链路建立请求消息发送的检测指 示, 候选小区不仅完成了检测的流程, 还相应的准备了切换所需的接口、 信令 点、 带宽等资源。 因此, 为了防止资源浪费, 目标节点可以在确定目标小区后, 若除目标小区之外的其他候选小区的已经为 U E准备了无线链路资源, 则向除 所述其他候选小区发送链路删除请求消息, 通知已准备无线链路资源的候选小 区取消已分配的无线链路资源, 以便候选小区将这些资源释放, 用于其他服务。 In the embodiment of the present invention, the detection indication sent by the first link setup request message is performed, and the candidate cell not only completes the detection process, but also prepares resources, such as an interface, a signaling point, and a bandwidth, required for the handover. . Therefore, in order to prevent waste of resources, the target node may send a link deletion request to the other candidate cells if the radio resource resources have been prepared for the UE other than the target cell after determining the target cell. The message notifies the candidate cell that has prepared the radio link resource to cancel the allocated radio link resource, so that the candidate cell releases the resources for other services.
本发明另一实施例还提供一种选择目标小区的方法, 可应用于基站侧, 如 图 5所示。 Another embodiment of the present invention further provides a method for selecting a target cell, which can be applied to a base station side, as shown in FIG. 5.
401、 接收目标节点发送的检测指示。 401. Receive a detection indication sent by the target node.
其中, 所述检测指示中包含以下信息中的至少一个: UE的上行扰码、 UE 的上行频率信息、 UE的上行频率所在的频带信息、 UE的不连续发送的配置信 息、 UE的上行专用物理控制信道的帧内定时偏移信息、 UE的上行专用物理控 制信道的时隙格式信息、 目标小区的扰码、 UE上行测量量、 检测时长、 连续检 测时间、 上报门限、 检测请求标识、 源小区信息等, 检测指示中包含的信息包 括但不局限于上述内容, 还可以根据实际情况添加或修改检测指示的内容。 其
他没有列出的指示信息同实施例一, 不再赘述。 The detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of the uplink frequency of the UE, configuration information of the discontinuous transmission of the UE, and uplink dedicated physics of the UE. Intra-frame timing offset information of the control channel, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE uplink measurement amount, detection duration, continuous detection time, reporting threshold, detection request identifier, source cell Information, etc., the information included in the detection indication includes but is not limited to the above content, and the content of the detection indication may be added or modified according to actual conditions. Its The instructions that he does not list are the same as those in the first embodiment, and will not be described again.
402、 根据所述检测指示检测用户设备 UE的上行信号质量。 402. Detect, according to the detection indication, an uplink signal quality of the user equipment UE.
其中, 候选小区可以根据检测指示中包含的 UE的配置信息, 例如待切换 UE的上行扰码检测该 UE, 还可以根据 UE的上行频率信息和帧内定时偏移信 息计算 UE上行信号帧的起始位置, 以便将检测信号与 UE的上行信号同步。 候 选小区还可以在 UE处于不连续发送状态时,对 UE进行不连续发送的质量检测。 以此类推, 候选小区还可以根据检测指示中的其他信息配置检测参数, 根据检 测指示中指示的测量量, 发送测量结果。 The candidate cell may detect the UE according to the configuration information of the UE included in the detection indication, for example, the uplink scrambling code of the UE to be switched, and may also calculate the uplink signal frame of the UE according to the uplink frequency information of the UE and the intra-frame timing offset information. The starting position is to synchronize the detection signal with the uplink signal of the UE. The candidate cell may also perform quality detection of discontinuous transmission to the UE when the UE is in a discontinuous transmission state. By analogy, the candidate cell may further configure the detection parameter according to other information in the detection indication, and send the measurement result according to the measurement quantity indicated in the detection indication.
403、 向所述目标节点发送检测结果。 403. Send a detection result to the target node.
其中, 检测结果可以包含在检测专用响应消息中, 也可以包含在第一链路 建立响应消息中发送给目标节点, 也可以通过链路建立失败消息或检测失败的 消息发送给目标节点。 所述检测结果可以包含以下信息中的一个或多个: 有 /没 有检测到 UE的指示、 上行 DPCCH的信号强度、 上行 DPCCH的信噪比 SIR、 超过预定义门限的指示、 检测时长等。 检测结果中包含的信息可以参考表 3 , 也 可以根据实际情况添加或修改检测结果中的信息内容, 本发明实施例对此不做 限定。 The detection result may be included in the detection specific response message, or may be sent to the target node in the first link setup response message, or may be sent to the target node through the link establishment failure message or the detection failure message. The detection result may include one or more of the following information: presence/absence of an indication of the detected UE, signal strength of the uplink DPCCH, signal to noise ratio SIR of the uplink DPCCH, an indication exceeding a predefined threshold, a duration of detection, and the like. The information contained in the detection result may be referred to in Table 3. The content of the information in the detection result may be added or modified according to the actual situation, which is not limited by the embodiment of the present invention.
另外一种表示检测检测结果的方式, 只发送约定的专用响应消息, 该消息 可以不包含任何上述所述的检测结果, 只要目标节点收到约定的专用响应消息 后即认为是检测到 UE的上行信号质量超过一定门限。 Another way of detecting the detection result is to send only the agreed-only dedicated response message, and the message may not include any of the foregoing detection results, and the target node is considered to be detecting the uplink of the UE as long as the target node receives the agreed-specific response message. Signal quality exceeds a certain threshold.
表 3 table 3
进一步的, 如图 6所示, 在向所述目标节点发送检测结果之前, 该选择目 标小区的方法还可以包括: Further, as shown in FIG. 6, before the sending the detection result to the target node, the method for selecting the target cell may further include:
404、 根据所述检测结果判断是否向所述目标节点发送检测结果; 若所述检 测结果表明 UE上行信号质量不低于指定的门限, 则执行步骤 405; 若所述检测 结果表明 UE上行信号质量低于指定的门限, 则执行步骤 406。
其中, 候选小区接收到目标节点发送的检测指示后, 根据检测指示中的信 息和配置参数去检测待切换 UE的上行信号质量。候选小区可以根据检测结果选 择是否向目标节点反馈检测结果,若 UE上行信号质量不低于指定的门限, 则向 目标节点发送检测结果; 若 UE上行信号质量低于指定的门限, 则可以不向目标 节点发送检测结果, 或向目标节点发送检测失败的结果, 以减少目标节点的计 算量。 404. Determine, according to the detection result, whether the detection result is sent to the target node. If the detection result indicates that the uplink signal quality of the UE is not lower than the specified threshold, perform step 405; if the detection result indicates the uplink signal quality of the UE. If the threshold is lower than the specified threshold, step 406 is performed. After receiving the detection indication sent by the target node, the candidate cell detects the uplink signal quality of the UE to be switched according to the information and the configuration parameter in the detection indication. The candidate cell may select whether to feed back the detection result to the target node according to the detection result. If the uplink signal quality of the UE is not lower than the specified threshold, the detection result is sent to the target node; if the uplink signal quality of the UE is lower than the specified threshold, the candidate cell may not The target node sends the detection result, or sends the result of the detection failure to the target node to reduce the calculation amount of the target node.
405、 向所述目标节点发送检测结果。 405. Send a detection result to the target node.
其中, 在不同的应用场景中候选小区可以通过不同的消息形式向目标节点 发送检测结果。 例如, 若目标节点通过检测专用消息发送的检测指示, 则候选 小区将检测结果携带在检测专用响应消息中, 发送给目标节点。 若目标节点通 过第一链路建立请求消息发送的检测指示, 则候选小区将检测结果携带在第一 链路建立响应消息中, 发送给目标节点。 The candidate cell may send the detection result to the target node by using different message forms in different application scenarios. For example, if the target node detects the detection indication sent by the dedicated message, the candidate cell carries the detection result in the detection-specific response message and sends it to the target node. If the target node passes the detection indication sent by the first link setup request message, the candidate cell carries the detection result in the first link setup response message and sends the result to the target node.
另外一种表示检测检测结果的方式, 只发送第一链路建立响应消息, 该消 息可以不包含任何上述所述的检测结果, 只要目标节点收到第一链路建立响应 消息后即认为是检测到 UE的上行信号质量超过一定门限。 Another way of detecting the detection result is to send only the first link setup response message, the message may not include any of the foregoing detection results, and the target node considers the detection as soon as it receives the first link setup response message. The uplink signal quality to the UE exceeds a certain threshold.
406、 不向所述目标节点发送检测结果, 或向所述目标节点发送检测失败的 消息。 406. Send a detection result to the target node, or send a message that the detection fails to the target node.
其中,若候选小区未检测到待切换的 UE,或检测得到的 UE信号质量较差, 则可以不向目标节点发送检测结果, 或者也可以向目标节点发送检测失败的消 息, 或者向目标节点发送链路建立失败消息。 所述链路建立失败消息和检测失 败的消息中也可以包含检测结果。 If the candidate cell does not detect the UE to be handed over, or the detected UE signal quality is poor, the detection result may not be sent to the target node, or the detection failure message may be sent to the target node, or sent to the target node. Link establishment failure message. The link establishment failure message and the failure detection message may also include the detection result.
例如, 候选小区根据检测指示中包含的 UE的相关配置信息检测 UE, 然而 在最大检测时长范围内仍未检测到 UE的信号,则可以向目标节点发送检测失败 的消息或链路建立失败消息。或者,若候选小区检测到 UE的上行信号质量后发 现其信号质量低于预定标准, 不能保证良好的服务, 则可以不向目标节点发送 检测结果, 目标节点接收到检测结果后则可以自动淘汰该候选小区。 For example, the candidate cell detects the UE according to the related configuration information of the UE included in the detection indication. However, if the signal of the UE is still not detected within the maximum detection duration, the detection failure message or the link establishment failure message may be sent to the target node. Alternatively, if the candidate cell detects the uplink signal quality of the UE and finds that the signal quality is lower than the predetermined standard and cannot guarantee good service, the detection result may not be sent to the target node, and the target node may automatically eliminate the detection result after receiving the detection result. Candidate cell.
本发明另一实施例提供一种选择目标小区的方法, 可应用于基站侧, 如图 7 所示。 在本发明实施例的一种应用场景中, 可以通过检测专用响应消息向目标 节点发送检测结果, 因此步骤 401-403还可以通过如下方式实现: Another embodiment of the present invention provides a method for selecting a target cell, which can be applied to a base station side, as shown in FIG. In an application scenario of the embodiment of the present invention, the detection result may be sent to the target node by detecting the dedicated response message, so the steps 401-403 may also be implemented as follows:
501、 接收目标节点发送的检测专用消息, 所述检测专用消息中携带有所述 检测指示。
其中, 候选小区接收到目标节点发送检测专用消息, 从检测专用消息中解 析出检测指示, 釆用检测指示中包含的相关配置信息检测待切换的 UE。 501. Receive a detection-specific message sent by the target node, where the detection-specific message carries the detection indication. The candidate cell receives the target node to send a detection dedicated message, parses the detection indication from the detection dedicated message, and detects the UE to be handed over by using the relevant configuration information included in the detection indication.
502、 根据所述检测指示检测用户设备 UE的上行信号质量。 502. Detect, according to the detection indication, an uplink signal quality of the user equipment UE.
503、 向所述目标节点发送检测专用响应消息, 所述检测专用响应消息中包 含所述检测结果。 503. Send a detection specific response message to the target node, where the detection specific response message includes the detection result.
其中,候选小区根据检测指示中的信息检测 UE的上行信号质量之后,将测 量结果携带在检测专用响应消息中, 发送给目标节点。 所述测量结果的信息可 以是表 3中的一个或多个。所述检测结果中包含的对 UE的测量量, 可以由目标 节点和候选小区预先约定, 也可以从检测指示中确定, 例如, 该测量量可以是 UE上行信号的信噪比等, 本发明实施例对此不做限定。 After the candidate cell detects the uplink signal quality of the UE according to the information in the detection indication, the measurement result is carried in the detection dedicated response message and sent to the target node. The information of the measurement results may be one or more of Table 3. The measurement quantity of the UE included in the detection result may be pre-agreed by the target node and the candidate cell, or may be determined from the detection indication. For example, the measurement quantity may be a signal to noise ratio of the uplink signal of the UE, etc., and the implementation of the present invention This example does not limit this.
如图 8所示, 在本发明实施例的另一种实施场景中, 基站也可以通过第一 链路建立响应消息向目标节点发送检测结果,因此步骤 401-403还可以通过如下 方式实现: As shown in FIG. 8, in another implementation scenario of the embodiment of the present invention, the base station may also send the detection result to the target node by using the first link setup response message, so the steps 401-403 may also be implemented as follows:
601、 接收目标节点发送的第一链路建立请求消息, 所述第一链路建立请求 消息中携带有所述检测指示。 601. Receive a first link setup request message sent by the target node, where the first link setup request message carries the detection indication.
其中, 第一链路建立请求消息由目标节点发送给候选小区, 是在现有的无 线链路建立请求消息中添加了检测指示后, 得到的携带有检测指示的无线链路 建立请求消息。 候选小区在接收到第一链路建立请求消息后, 不仅会准备相应 的无线链路资源,还会检测待切换的 UE的上行信号质量。候选小区可以在检测 到 U E的上行质量高于一定门限后才为 U E准备无线链路资源。 The first link setup request message is sent by the target node to the candidate cell, and is a radio link setup request message carrying the detection indication obtained after the detection indication is added to the existing wireless link setup request message. After receiving the first link setup request message, the candidate cell not only prepares the corresponding radio link resource, but also detects the uplink signal quality of the UE to be handed over. The candidate cell may prepare the radio link resource for the U E after detecting that the uplink quality of the U E is above a certain threshold.
602、 根据所述检测指示检测用户设备 UE的上行信号质量。 602. Detect, according to the detection indication, an uplink signal quality of the user equipment UE.
603、 准备无线链路资源, 并向所述目标节点发送第一链路建立响应消息, 所述第一链路建立响应消息中包含所述检测结果。 603. Prepare a radio link resource, and send a first link setup response message to the target node, where the first link setup response message includes the detection result.
其中, 所述第一链路建立响应消息由候选小区发送给目标节点, 是在现有 的无线链路建立响应消息中添加了检测结果后, 得到的携带有检测结果的无线 链路建立响应消息。 该第一链路建立响应消息由候选小区发送给目标节点, 既 可以通知目标节点已准备切换所需的相关资源, 还向目标节点发送检测结果。 The first link setup response message is sent by the candidate cell to the target node, and is a radio link setup response message carrying the detection result after the detection result is added to the existing radio link setup response message. . The first link setup response message is sent by the candidate cell to the target node, and the target node may be notified of the relevant resources that are ready for handover, and the detection result is also sent to the target node.
604、根据目标节点发送的链路删除请求消息,删除已准备的无线链路资源。 例如, 在一次切换中有两个候选小区分别是候选小区 1和候选小区 2, 若目 标节点根据检测结果发现候选小区 1的信号质量较高, 则会将候选小区 1确定 为目标小区, 让候选小区 1完成后续的切换工作。 若候选小区 2已经为本次切
换分配的无线链路资源, 则目标节点可以向候选小区 2发送链路删除请求消息, 候选小区 2在接收到链路删除请求消息后, 删除已准备的无线链路资源, 将这 些资源释放以供其他服务使用。 604. Delete the prepared radio link resource according to the link deletion request message sent by the target node. For example, in a handover, two candidate cells are candidate cell 1 and candidate cell 2 respectively. If the target node finds that the signal quality of the candidate cell 1 is high according to the detection result, the candidate cell 1 is determined as the target cell, and the candidate is made. The cell 1 completes the subsequent handover work. If candidate cell 2 has been cut for this time After the allocated radio link resources are exchanged, the target node may send a link deletion request message to the candidate cell 2. After receiving the link deletion request message, the candidate cell 2 deletes the prepared radio link resources and releases the resources. For other services.
本发明另一实施例提供一种选择目标小区的方法, 可应用于源节点侧, 如 图 9所示。 Another embodiment of the present invention provides a method for selecting a target cell, which can be applied to a source node side, as shown in FIG.
701、 根据 UE上报的测量报告向目标节点发送切换请求消息, 所述切换请 求消息中包含检测指示。 701. Send a handover request message to the target node according to the measurement report reported by the UE, where the handover request message includes a detection indication.
在本发明实施例中, 由于目标节点无法确定唯一的目标小区时, 可以令多 个候选小区检测 UE的信号质量来选择信号质量好的目标小区,因此目标节点向 候选小区发送的检测指示中包含有检测的相关配置信息。 而这些配置信息除了 可以在目标节点上预先配置, 还可以从源节点端获取。 In the embodiment of the present invention, when the target node cannot determine the unique target cell, the multiple candidate cells may detect the signal quality of the UE to select the target cell with good signal quality, and therefore the detection indication sent by the target node to the candidate cell is included. There are related configuration information for detection. In addition to being pre-configured on the target node, these configuration information can also be obtained from the source node.
其中, 源节点是待切换的 UE所在的服务小区的控制器, 可以获取 UE的上 行扰码、 目标小区扰码、 UE的相关配置信息等, 源控制可以将这些配置信息通 过切换请求消息发送给目标节点, 也可以通过专用的配置信息传递消息, 或通 过系统消息发送给目标节点。 目标节点可以根据接收到的相关配置信息生成所 述检测指示, 发送给候选小区。 进一步的, 所述切换请求消息中还可以包含: 检测请求标识。所述检测请求标识用于指示所述目标节点对 UE进行上行信号质 量的检测。 The source node is a controller of the serving cell where the UE to be switched is located, and may obtain an uplink scrambling code of the UE, a target cell scrambling code, and related configuration information of the UE, and the source control may send the configuration information to the handover request message. The target node can also deliver messages through dedicated configuration information or through system messages to the target node. The target node may generate the detection indication according to the received related configuration information, and send the detection indication to the candidate cell. Further, the handover request message may further include: a detection request identifier. The detection request identifier is used to indicate that the target node performs uplink signal quality detection on the UE.
其中, 可以在切换请求消息中添加检测请求标识, 用于指示目标节点是否 需要通过检测 UE的信号质量来确定目标小区。该检测标识可以是一个布尔型的 信元, 或是一个目标小区标识, 或目标小区扰码等。 也可以是以检测请求标识 是否存在来判断是否要通过检测 UE的信号质量来确定目标小区,当该检测请求 标识存在时需要, 当该检测请求标识不存在是不需要。 例如, 若 UE向源节点发 送的测量 4艮告中包含明确的目标小区标识, 源节点可以将目标小区标识携带在 切换请求消息中发送给目标节点, 则目标节点可以不用检测候选小区的信号质 量, 直接按照正常流程完成切换。 The detection request identifier may be added to the handover request message to indicate whether the target node needs to determine the target cell by detecting the signal quality of the UE. The detection identifier may be a Boolean cell, or a target cell identifier, or a target cell scrambling code. It is also possible to determine whether the target cell is to be determined by detecting the signal quality of the UE by detecting whether the presence of the identification is present, and when the detection request identifier is present, it is not necessary when the detection request identifier does not exist. For example, if the measurement report sent by the UE to the source node includes an explicit target cell identifier, and the source node may carry the target cell identifier in the handover request message and send the message to the target node, the target node may not detect the signal quality of the candidate cell. , complete the switch directly according to the normal process.
本发明另一实施例提供一种目标节点, 如图 10所示, 包括: 检测单元 81、 小区确定单元 82。 Another embodiment of the present invention provides a target node, as shown in FIG. 10, including: a detecting unit 81 and a cell determining unit 82.
检测单元 81 , 用于向候选小区发送检测指示, 接收所述候选小区发送的检 测结果, 其中所述检测指示用于指示候选小区检测用户设备 UE的上行信号质 量。
小区确定单元 82,用于根据所述检测单元 81接收的所述检测结果确定目标 小区。 The detecting unit 81 is configured to send a detection indication to the candidate cell, and receive a detection result sent by the candidate cell, where the detection indication is used to indicate that the candidate cell detects the uplink signal quality of the user equipment UE. The cell determining unit 82 is configured to determine a target cell according to the detection result received by the detecting unit 81.
进一步的, 如图 11所示, 所述检测单元 81可以包括: 专用消息发送模块 811、 专用反馈接收模块 812。 Further, as shown in FIG. 11, the detecting unit 81 may include: a dedicated message sending module 811 and a dedicated feedback receiving module 812.
专用消息发送模块 811 , 用于向候选小区发送检测专用消息, 所述检测专用 消息中携带有所述检测指示。 The dedicated message sending module 811 is configured to send a detection dedicated message to the candidate cell, where the detection dedicated message carries the detection indication.
专用反馈接收模块 812 , 用于接收所述候选 d、区发送的检测专用响应消息, 所述检测专用响应消息中包含所述检测结果。 The dedicated feedback receiving module 812 is configured to receive the detection specific response message sent by the candidate d, the area, where the detection specific response message includes the detection result.
如图 12所示, 在本发明实施例的另一种实施场景中, 所述检测单元 81还 可以包括: 第一消息发送模块 813、 第一反馈接收模块 814。 As shown in FIG. 12, in another implementation scenario of the embodiment of the present invention, the detecting unit 81 may further include: a first message sending module 813 and a first feedback receiving module 814.
第一消息发送模块 813 , 用于向候选小区发送第一链路建立请求消息, 所述 第一链路建立请求消息中携带有所述检测指示。 The first message sending module 813 is configured to send a first link setup request message to the candidate cell, where the first link setup request message carries the detection indication.
第一反馈接收模块 814,用于接收所述候选小区发送的第一链路建立响应消 息, 所述第一链路建立响应消息中包含所述检测结果。 The first feedback receiving module 814 is configured to receive a first link setup response message sent by the candidate cell, where the first link setup response message includes the detection result.
可选的, 所述小区确定单元 82还可以用于: 根据所述检测结果选择信号质 量超过预定门限的响应最快的候选小区作为目标小区。 或者, 所述小区确定单 元 82还用于: 根据所述检测结果选择信号质量最高的候选小区作为目标小区。 Optionally, the cell determining unit 82 is further configured to: select, according to the detection result, a candidate cell with the fastest response whose signal quality exceeds a predetermined threshold as the target cell. Alternatively, the cell determining unit 82 is further configured to: select, according to the detection result, a candidate cell with the highest signal quality as the target cell.
进一步的, 在如图 12中的实施场景中, 该目标节点还可以包括: 删除单元 Further, in the implementation scenario as shown in FIG. 12, the target node may further include: deleting the unit
83。 83.
删除单元 83 , 用于向除所述目标小区之外的已经为 U E准备无线链路资源 的其他候选小区发送链路删除请求消息, 以便所述其他候选小区释放为 U E准 备的无线链路资源。 The deleting unit 83 is configured to send a link deletion request message to other candidate cells other than the target cell that have prepared radio link resources for the U E, so that the other candidate cells release the radio link resources prepared for the U E.
进一步的, 如图 13所示, 该目标节点还可以包括: 源端接收单元 84、 候选 单元 85、 正常切换单元 86。 Further, as shown in FIG. 13, the target node may further include: a source receiving unit 84, a candidate unit 85, and a normal switching unit 86.
源端接收单元 84, 用于在所述检测单元 81向候选小区发送检测指示,接收 所述候选小区发送的检测结果之前, 根据源节点发送的切换请求消息中携带的 检测标识, 判断是否检测 UE的上行信号质量。 The source receiving unit 84 is configured to send, by the detecting unit 81, a detection indication to the candidate cell, and before receiving the detection result sent by the candidate cell, determine whether to detect the UE according to the detection identifier carried in the handover request message sent by the source node. Uplink signal quality.
候选单元 85 ,用于在所述源端接收单元 84判断所述切换请求消息中携带有 所述检测标识时, 根据所述切换请求消息确定所述候选小区。 The candidate unit 85 is configured to determine, according to the handover request message, the candidate cell when the source receiving unit 84 determines that the handover request message carries the detection identifier.
所述检测单元 81还用于在所述候选单元 85确定所述候选小区之后, 向候 选小区发送检测指示。
正常切换单元 86,用于在所述源端接收单元 84判断所述切换请求消息中未 携带所述检测标识时, 按照正常切换流程完成切换。 The detecting unit 81 is further configured to send a detection indication to the candidate cell after the candidate unit 85 determines the candidate cell. The normal switching unit 86 is configured to complete the handover according to the normal handover procedure when the source receiving unit 84 determines that the detection identifier is not carried in the handover request message.
需要说明的是, 所述检测指示中包含以下信息中的至少一个: UE的上行扰 码、 UE的上行频率信息、 UE的上行频率所在的频带信息、 UE的不连续发送的 配置信息、 UE的上行专用物理控制信道的帧内定时偏移信息、 UE的上行专用 物理控制信道的时隙格式信息、 目标小区的扰码、 UE上行测量量、 检测时长、 连续检测时间、 上报门限、 检测请求标识、 源小区信息。 It should be noted that the detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of an uplink frequency of the UE, configuration information of discontinuous transmission of the UE, and UE information. Intra-frame timing offset information of the uplink dedicated physical control channel, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE uplink measurement amount, detection duration, continuous detection time, reporting threshold, detection request identifier Source cell information.
本发明另一实施例还提供一种基站, 如图 14所示, 包括: 接收单元 91、 上 行检测单元 92、 反馈单元 93。 Another embodiment of the present invention further provides a base station, as shown in FIG. 14, comprising: a receiving unit 91, an uplink detecting unit 92, and a feedback unit 93.
接收单元 91 , 用于接收目标节点发送的检测指示。 The receiving unit 91 is configured to receive a detection indication sent by the target node.
上行检测单元 92, 用于根据所述检测指示检测用户设备 UE的上行信号质 量。 The uplink detecting unit 92 is configured to detect an uplink signal quality of the user equipment UE according to the detection indication.
反馈单元 93 , 用于向所述目标节点发送检测结果。 The feedback unit 93 is configured to send a detection result to the target node.
进一步的, 如图 15所示, 所述接收单元 91包括: 专用接收模块 911。 专用接收模块 911 , 用于接收目标节点发送的检测专用消息, 所述检测专用 消息中携带有所述检测指示。 Further, as shown in FIG. 15, the receiving unit 91 includes: a dedicated receiving module 911. The dedicated receiving module 911 is configured to receive a detection dedicated message sent by the target node, where the detection dedicated message carries the detection indication.
反馈单元 93还用于: 向所述目标节点发送检测专用响应消息, 所述检测专 用响应消息中包含所述检测结果。 The feedback unit 93 is further configured to: send a detection specific response message to the target node, where the detection specific response message includes the detection result.
进一步的, 该基站还可以包括: 第二响应单元 94。 Further, the base station may further include: a second response unit 94.
第二响应单元 94,用于在所述反馈单元 93向所述目标节点发送检测结果之 前, 判断所述 UE上行信号质量是否低于指定的门限。 The second response unit 94 is configured to determine whether the uplink signal quality of the UE is lower than a specified threshold before the feedback unit 93 sends the detection result to the target node.
所述反馈单元 93还用于, 在所述 UE上行信号质量不低于指定的门限时, 执行所述向所述目标节点发送检测专用响应消息。 The feedback unit 93 is further configured to: when the UE uplink signal quality is not lower than a specified threshold, perform the sending a detection specific response message to the target node.
所述反馈单元 93还用于, 在所述 UE上行信号质量低于指定的门限时, 不 如图 16所示, 在本发明实施例的另一种实施场景中, 所述接收单元 91包 括: 第一接收模块 912。 The feedback unit 93 is further configured to: when the uplink signal quality of the UE is lower than a specified threshold, as shown in FIG. 16, in another implementation scenario of the embodiment of the present invention, the receiving unit 91 includes: A receiving module 912.
第一接收模块 912, 用于接收目标节点发送的第一链路建立请求消息, 所述 第一链路建立请求消息中携带有所述检测指示。 The first receiving module 912 is configured to receive a first link setup request message sent by the target node, where the first link setup request message carries the detection indication.
所述反馈单元 93还用于: 准备对应的无线链路资源, 并向所述目标节点发 送第一链路建立响应消息, 所述第一链路建立响应消息中包含所述检测结果。
进一步的, 该基站还可以包括: 第一响应单元 95。 The feedback unit 93 is further configured to: prepare a corresponding radio link resource, and send a first link setup response message to the target node, where the first link setup response message includes the detection result. Further, the base station may further include: a first response unit 95.
第一响应单元 95,用于在所述反馈单元 93向所述目标节点发送检测结果之 前, 根据所述检测结果判断是否向所述目标节点发送检测结果。 The first response unit 95 is configured to determine, according to the detection result, whether to send the detection result to the target node before the feedback unit 93 sends the detection result to the target node.
所述反馈单元 93 , 还用于在所述 UE上行信号质量不低于指定的门限时, 所述反馈单元 93 , 还用于在所述 UE上行信号质量低于指定的门限时, 不 向所述目标节点发送第一链路建立响应消息, 或向所述目标节点发送链路建立 失败消息。 The feedback unit 93 is further configured to: when the uplink signal quality of the UE is not lower than a specified threshold, the feedback unit 93 is further configured to: when the uplink signal quality of the UE is lower than a specified threshold, The target node sends a first link setup response message, or sends a link setup failure message to the target node.
进一步的, 该基站还可以包括: 资源删除单元 96。 Further, the base station may further include: a resource deleting unit 96.
资源删除单元 96,用于在所述反馈单元 93向所述目标节点发送检测结果之 后, 若收到根据目标节点发送的链路删除请求消息, 则删除已准备的无线链路 资源。 The resource deleting unit 96 is configured to delete the prepared radio link resource if the link deletion request message sent according to the target node is received after the feedback unit 93 sends the detection result to the target node.
其中, 所述检测指示中包含以下信息中的至少一个: UE的上行扰码、 UE 的上行频率信息、 UE的上行频率所在的频带信息、 UE的不连续发送的配置信 息、 UE的上行专用物理控制信道的帧内定时偏移信息、 UE的上行专用物理控 制信道的时隙格式信息、 目标小区的扰码、 UE上行测量量、 检测时长、 连续检 测时间、 上 ^艮门限、 检测请求标识。 The detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of the uplink frequency of the UE, configuration information of the discontinuous transmission of the UE, and uplink dedicated physics of the UE. Intra-frame timing offset information of the control channel, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE uplink measurement amount, detection duration, continuous detection time, upper threshold, detection request identifier.
本发明另一实施例还提供一种源节点, 如图 17所示, 包括: 切换请求单元 1001。 Another embodiment of the present invention further provides a source node, as shown in FIG. 17, including: a handover request unit 1001.
切换请求单元 1001 , 用于根据 UE上^艮的测量 ^艮告向目标节点发送切换请 求消息, 所述切换请求消息中包含检测指示。 The handover request unit 1001 is configured to send a handover request message to the target node according to the measurement report on the UE, where the handover request message includes a detection indication.
其中, 所述检测指示中包含以下信息中的至少一个: UE的上行扰码、 UE 的上行频率信息、 UE的上行频率所在的频带信息、 UE的不连续发送的配置信 息、 UE的上行专用物理控制信道的帧内定时偏移信息、 UE的上行专用物理控 制信道的时隙格式信息、 目标小区的扰码、 UE上行测量量、 检测时长、 连续检 测时间、 上报门限、 检测请求标识。 所述切换请求消息中还可以包含: 检测请 求标识,所述检测请求标识用于指示所述目标节点对 UE进行上行信号质量的检 测。 The detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of the uplink frequency of the UE, configuration information of the discontinuous transmission of the UE, and uplink dedicated physics of the UE. The intraframe timing offset information of the control channel, the slot format information of the uplink dedicated physical control channel of the UE, the scrambling code of the target cell, the UE uplink measurement amount, the detection duration, the continuous detection time, the reporting threshold, and the detection request identifier. The handover request message may further include: a detection request identifier, where the detection request identifier is used to indicate that the target node performs uplink signal quality detection on the UE.
本发明的另一实施例还提供一种选择目标小区的系统,如图 18所示, 包括: 目标节点 1101、 基站 1102以及源节点 1103。 Another embodiment of the present invention further provides a system for selecting a target cell, as shown in FIG. 18, including: a target node 1101, a base station 1102, and a source node 1103.
所述源节点 1103 , 用于根据 UE上报的测量报告向目标节点 1101发送切换
请求消息。 The source node 1103 is configured to send a handover to the target node 1101 according to the measurement report reported by the UE. Request message.
所述目标节点 1101 , 用于向候选小区发送检测指示, 接收所述候选小区发 送的检测结果,其中所述检测指示用于指示候选小区检测用户设备 UE的上行信 号质量; 根据所述检测结果确定目标小区。 The target node 1101 is configured to send a detection indication to the candidate cell, and receive a detection result that is sent by the candidate cell, where the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE, and is determined according to the detection result. Target cell.
所述基站 1102, 用于接收目标节点 1101发送的检测指示; 根据所述检测指 示检测用户设备 UE的上行信号质量; 向所述目标节点 1101发送检测结果。 The base station 1102 is configured to receive a detection indication sent by the target node 1101, detect an uplink signal quality of the user equipment UE according to the detection indication, and send a detection result to the target node 1101.
本发明实施例提供的目标节点、 源节点、 基站和选择目标小区的系统, 通 过让候选小区检测待切换 UE的上行信号质量,根据检测结果从候选小区中选择 信号质量达到预定标准的候选小区作为目标小区, 与现有技术中任意选择候选 小区之一作为目标小区的方法相比,可以保提高切换的成功率, 能够为 UE选择 信号质量较高的目标小区。 The target node, the source node, the base station, and the system for selecting the target cell according to the embodiment of the present invention, by allowing the candidate cell to detect the uplink signal quality of the UE to be handed over, select a candidate cell whose signal quality reaches a predetermined standard from the candidate cell according to the detection result. Compared with the method for selecting one of the candidate cells in the prior art as the target cell, the target cell can improve the success rate of the handover, and can select the target cell with higher signal quality for the UE.
另外,本发明主要通过检测 UE的上行质量来确定目标小区,还可用于其它 需要与切换场景类似的场景。 In addition, the present invention mainly determines the target cell by detecting the uplink quality of the UE, and can also be used for other scenarios that need to be similar to the handover scenario.
所属领域的技术人员可以清楚地了解到, 为描述的方便和简洁, 仅以上述 各功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上述功能分 配由不同的功能模块完成, 即将装置的内部结构划分成不同的功能模块, 以完 成以上描述的全部或者部分功能。 上述描述的系统, 装置和单元的具体工作过 程, 可以参考前述方法实施例中的对应过程, 在此不再赘述。 It will be apparent to those skilled in the art that, for convenience and brevity of description, only the division of each functional module described above is exemplified. In practical applications, the above-mentioned function assignment can be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统, 装置和方 法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示意性 的, 例如, 所述模块或单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个系 统, 或一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间的耦 合或直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合或通信 连接, 可以是电性, 机械或其它的形式。 单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者 也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或者全部 单元来实现本实施例方案的目的。 In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise. The components displayed by the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单元
中。 上述集成的单元既可以釆用硬件的形式实现, 也可以釆用软件功能单元的 形式实现。 In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. Medium. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或 使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明 的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或 部分可以以软件产品的形式体现出来, 该计算机软件产品存储在一个存储介质 中, 包括若干指令用以使得一台计算机设备(可以是个人计算机, 服务器, 或 者网络设备等)或处理器(processor )执行本发明各个实施例所述方法的全部或 部分步骤。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器(ROM, Read-Only Memory )、 随机存取存 4诸器 ( RAM, Random Access Memory )、 磁碟 或者光盘等各种可以存储程序代码的介质。 The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. The instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like. The medium of the code.
以上所述, 以上实施例仅用以说明本发明的技术方案, 而非对其限制; 尽 管参照前述实施例对本发明进行了详细的说明, 本领域的普通技术人员应当理 解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分 技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术方案的本质脱 离本发明各实施例技术方案的范围。
The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or some of the technical features are equivalently substituted; and the modifications or substitutions do not deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1、 一种选择目标小区的方法, 其特征在于, 包括: A method for selecting a target cell, which is characterized by comprising:
向候选小区发送检测指示, 其中所述检测指示用于指示候选小区检测用户 设备 UE的上行信号质量; Sending a detection indication to the candidate cell, where the detection indication is used to indicate that the candidate cell detects the uplink signal quality of the user equipment UE;
接收所述候选小区发送的检测结果, 根据所述检测结果确定目标小区。 Receiving a detection result sent by the candidate cell, and determining a target cell according to the detection result.
2、 根据权利要求 1所述的选择目标小区的方法, 其特征在于, 所述向候选 小区发送检测指示, 包括: The method for selecting a target cell according to claim 1, wherein the sending the detection indication to the candidate cell includes:
向候选小区发送检测专用消息, 所述检测专用消息中携带有所述检测指示; 所述接收所述候选小区发送的检测结果, 包括: Sending a detection-specific message to the candidate cell, where the detection-specific message carries the detection indication; the receiving the detection result sent by the candidate cell includes:
接收所述候选小区发送的检测专用响应消息, 所述检测专用响应消息中包 含所述检测结果。 And receiving a detection-specific response message sent by the candidate cell, where the detection-specific response message includes the detection result.
3、 根据权利要求 1所述的选择目标小区的方法, 其特征在于, 所述向候选 小区发送检测指示, 包括: The method for selecting a target cell according to claim 1, wherein the sending the detection indication to the candidate cell includes:
向候选小区发送第一链路建立请求消息, 所述第一链路建立请求消息中携 带有所述检测指示; Sending a first link setup request message to the candidate cell, where the first link setup request message carries the detection indication;
所述接收所述候选小区发送的检测结果, 包括: The receiving the detection result sent by the candidate cell includes:
接收所述候选小区发送的第一链路建立响应消息, 所述第一链路建立响应 消息中包含所述检测结果。 Receiving a first link setup response message sent by the candidate cell, where the first link setup response message includes the detection result.
4、 根据权利要求 3所述的选择目标小区的方法, 其特征在于, 所述根据所 述检测结果确定合适的目标小区后, 还包括: The method for selecting a target cell according to claim 3, wherein after determining the suitable target cell according to the detection result, the method further includes:
若除所述目标小区之外的其他候选小区已经为 U E准备无线链路资源, 则 向除所述其他候选小区发送链路删除请求消息, 以便所述其他候选小区释放为 U E准备的无线链路资源。 If the candidate cells other than the target cell have prepared radio link resources for the UE, send a link deletion request message to the other candidate cells, so that the other candidate cells release the radio link prepared for the UE. Resources.
5、 根据权利要求 1所述的选择目标小区的方法, 其特征在于, 所述根据所 述检测结果确定目标小区, 包括: The method for selecting a target cell according to claim 1, wherein the determining the target cell according to the detection result includes:
根据所述检测结果选择信号质量最高的候选小区作为目标小区; Selecting, as the target cell, a candidate cell with the highest signal quality according to the detection result;
或者, 根据所述检测结果选择信号质量超过预定门限的候选小区作为目标 小区。 Alternatively, a candidate cell whose signal quality exceeds a predetermined threshold is selected as the target cell according to the detection result.
6、 根据权利要求 1所述的选择目标小区的方法, 其特征在于, 在向候选小 区发送检测指示, 并接收所述候选小区发送的检测结果之前, 还包括: The method for selecting a target cell according to claim 1, wherein before transmitting the detection indication to the candidate cell and receiving the detection result sent by the candidate cell, the method further includes:
接收源节点发送的切换请求消息; 若所述切换请求消息中携带有所述检测指示, 则根据所述切换请求消息确 定所述候选小区, 并执行所述向候选小区发送检测指示。 Receiving a handover request message sent by the source node; And if the detection request carries the detection indication, determining the candidate cell according to the handover request message, and performing the sending a detection indication to the candidate cell.
7、 一种选择目标小区的方法, 其特征在于, 包括: 7. A method for selecting a target cell, the method comprising:
接收目标节点发送的检测指示; Receiving a detection indication sent by the target node;
根据所述检测指示检测用户设备 UE的上行信号质量; Detecting, according to the detection indication, an uplink signal quality of the user equipment UE;
向所述目标节点发送检测结果。 Sending a detection result to the target node.
8、 根据权利要求 7所述的选择目标小区的方法, 其特征在于, 所述接收目 标节点发送的检测指示, 包括: The method for selecting a target cell according to claim 7, wherein the receiving the detection indication sent by the target node comprises:
接收目标节点发送的检测专用消息, 所述检测专用消息中携带有所述检测 指示; Receiving a detection dedicated message sent by the target node, where the detection dedicated message carries the detection indication;
所述向所述目标节点发送检测结果为: 向所述目标节点发送检测专用响应 消息, 所述检测专用响应消息中包含所述检测结果。 The sending the detection result to the target node is: sending a detection specific response message to the target node, where the detection specific response message includes the detection result.
9、 根据权利要求 8所述的选择目标小区的方法, 其特征在于, 在向所述目 标节点发送检测结果之前, 还包括: The method for selecting a target cell according to claim 8, wherein before the sending the detection result to the target node, the method further includes:
若所述 UE上行信号质量不低于指定的门 ¾ 则执行所述向所述目标节点发 送检测成功的检测专用响应消息。 And if the UE uplink signal quality is not lower than the designated gate, performing the detecting dedicated response message that sends the detection success to the target node.
10、 根据权利要求 7所述的选择目标小区的方法, 其特征在于, 所述接收 目标节点发送的检测指示, 包括: The method for selecting a target cell according to claim 7, wherein the detecting indication sent by the receiving target node includes:
接收目标节点发送的第一链路建立请求消息, 所述第一链路建立请求消息 中携带有所述检测指示; Receiving a first link setup request message sent by the target node, where the first link setup request message carries the detection indication;
所述向所述目标节点发送检测结果为: 准备无线链路资源, 并向所述目标 节点发送第一链路建立响应消息, 所述第一链路建立响应消息中包含所述检测 结果。 The sending the detection result to the target node is: preparing a radio link resource, and sending a first link setup response message to the target node, where the first link setup response message includes the detection result.
11、 根据权利要求 10所述的选择目标小区的方法, 其特征在于, 在向所述 目标节点发送检测结果之前, 还包括: The method for selecting a target cell according to claim 10, further comprising: before sending the detection result to the target node,
若所述 UE上行信号质量不低于指定的门 ¾ 则执行所述准备无线链路资源 并向所述目标节点发送第一链路建立响应消息。 And preparing the radio link resource and sending a first link setup response message to the target node if the UE uplink signal quality is not lower than the specified threshold.
12、 根据权利要求 10所述的选择目标小区的方法, 其特征在于, 在准备无 线链路资源并向所述目标节点发送第一链路建立响应消息后, 还包括: The method for selecting a target cell according to claim 10, further comprising: after preparing the wireless link resource and sending the first link setup response message to the target node, the method further includes:
接收目标节点发送的链路删除请求消息, 删除已准备的无线链路资源。 Receiving a link deletion request message sent by the target node, and deleting the prepared radio link resource.
13、根据权利要求 7-12中任一项所述的选择目标小区的方法, 其特征在于, 所述检测指示中包含以下信息中的至少一个: UE的上行扰码、 UE的上行频率 信息、 UE的上行频率所在的频带信息、 UE的不连续发送的配置信息、 UE的上 行专用物理控制信道的帧内定时偏移信息、 UE的上行专用物理控制信道的时隙 格式信息、 目标小区的扰码、 UE上行测量量、 检测时长、 连续检测时间、 上报 门限、 检测请求标识、 源小区信息。 The method of selecting a target cell according to any one of claims 7 to 12, characterized in that The detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, frequency band information of an uplink frequency of the UE, configuration information of discontinuous transmission of the UE, and an uplink dedicated physical control channel of the UE. Intraframe timing offset information, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE uplink measurement amount, detection duration, continuous detection time, reporting threshold, detection request identifier, and source cell information.
14、 一种选择目标小区的方法, 其特征在于, 包括: A method for selecting a target cell, comprising:
根据 UE上报的测量报告向目标节点发送切换请求消息, 所述切换请求消息 中包含检测指示。 Sending a handover request message to the target node according to the measurement report reported by the UE, where the handover request message includes a detection indication.
15、 根据权利要求 14所述的选择目标小区的方法, 其特征在于, 所述检测 指示包括以下信息中的至少一个: UE的上行扰码、 UE的上行频率信息、 UE的 上行频率所在的频带信息、 UE的不连续发送的配置信息、 UE的上行专用物理 控制信道的帧内定时偏移信息、 UE的上行专用物理控制信道的时隙格式信息、 目标小区的扰码、 UE上行测量量、 检测时长、 连续检测时间、 上报门限、 检测 请求标识、 源小区信息。 The method for selecting a target cell according to claim 14, wherein the detection indication comprises at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, and a frequency band in which the uplink frequency of the UE is located. Information, configuration information of discontinuous transmission of the UE, intra-frame timing offset information of the uplink dedicated physical control channel of the UE, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE uplink measurement quantity, Detection duration, continuous detection time, reporting threshold, detection request identifier, source cell information.
16、 一种目标节点, 其特征在于, 包括: 16. A target node, comprising:
检测单元, 用于向候选小区发送检测指示, 接收所述候选小区发送的检测 结果, 其中所述检测指示用于指示候选小区检测用户设备 UE的上行信号质量; 小区确定单元, 用于根据所述检测单元接收的所述检测结果确定目标小区。 a detecting unit, configured to send a detection indication to the candidate cell, and receive a detection result sent by the candidate cell, where the detection indication is used to indicate that the candidate cell detects an uplink signal quality of the user equipment UE, and the cell determining unit is configured to The detection result received by the detecting unit determines a target cell.
17、 根据权利要求 16所述的目标节点, 其特征在于, 所述检测单元包括: 专用消息发送模块, 用于向候选小区发送检测专用消息, 所述检测专用消 息中携带有所述检测指示; The target node according to claim 16, wherein the detecting unit comprises: a dedicated message sending module, configured to send a detection specific message to the candidate cell, where the detection specific message carries the detection indication;
专用发送接收模块, 用于接收所述候选小区发送的检测专用响应消息, 所 述检测专用响应消息中包含所述检测结果。 And a dedicated sending and receiving module, configured to receive a detection-specific response message sent by the candidate cell, where the detection-specific response message includes the detection result.
18、根据权利要求 16所述的目标节点, 其特征在于, 所述检测单元还包括: 第一消息发送模块, 用于向候选小区发送第一链路建立请求消息, 所述第 一链路建立请求消息中携带有所述检测指示; The target node according to claim 16, wherein the detecting unit further comprises: a first message sending module, configured to send a first link setup request message to the candidate cell, where the first link is established The request message carries the detection indication;
第一反馈接收模块, 用于接收所述候选小区发送的第一链路建立响应消 息, 所述第一链路建立响应消息中包含所述检测结果。 And a first feedback receiving module, configured to receive a first link setup response message sent by the candidate cell, where the first link setup response message includes the detection result.
19、 根据权利要求 18所述的目标节点, 其特征在于, 还包括: The target node according to claim 18, further comprising:
删除单元, 用于向除所述目标小区之外的已经为 U E准备无线链路资源的 其他候选小区发送链路删除请求消息, 以便所述其他候选小区释放为 U E准备 的无线链路资源。 a deleting unit, configured to send a link deletion request message to other candidate cells other than the target cell that have prepared radio link resources for the UE, so that the other candidate cells are released for UE preparation Wireless link resources.
20、 根据权利要求 15所述的目标节点, 其特征在于, 所述小区确定单元还 用于: 根据所述检测结果选择信号质量最高的候选小区作为目标小区, 或者根 据所述检测结果选择信号质量超过预定门限的候选小区作为目标小区。 The target node according to claim 15, wherein the cell determining unit is further configured to: select a candidate cell with the highest signal quality as the target cell according to the detection result, or select a signal quality according to the detection result. A candidate cell exceeding a predetermined threshold is used as a target cell.
21、 根据权利要求 15所述的目标节点, 其特征在于, 还包括: The target node according to claim 15, further comprising:
源端接收单元, 用于在所述检测单元向候选小区发送检测指示, 接收所述 候选小区发送的检测结果之前, 根据源节点发送的切换请求消息中携带的检测 标识, 判断是否检测 UE的上行信号质量; The source receiving unit is configured to send, by the detecting unit, a detection indication to the candidate cell, and before receiving the detection result sent by the candidate cell, determine, according to the detection identifier carried in the handover request message sent by the source node, whether to detect the uplink of the UE. Signal quality;
候选单元, 用于在所述判断单元判断所述切换请求消息中携带有所述检测 指示时, 根据所述切换请求消息确定所述候选小区; a candidate unit, configured to determine, according to the handover request message, the candidate cell when the determining unit determines that the handover request message carries the detection indication;
所述检测单元还用于在所述候选单元确定所述候选小区之后, 向候选小区 发送检测指示; The detecting unit is further configured to: after the candidate unit determines the candidate cell, send a detection indication to the candidate cell;
正常切换单元, 用于在所述判断单元判断所述切换请求消息中未携带所述 检测指示时, 按照正常切换流程完成切换。 The normal switching unit is configured to complete the handover according to the normal handover procedure when the determining unit determines that the detection request message does not carry the detection indication.
22、 根据权利要求 16-21中任一项所述的目标节点, 其特征在于, 所述检测 指示中包含以下信息中的至少一个: UE的上行扰码、 UE的上行频率信息、 UE 的上行频率所在的频带信息、 UE的不连续发送的配置信息、 UE的上行专用物 理控制信道的帧内定时偏移信息、 UE的上行专用物理控制信道的时隙格式信 息、 目标小区的扰码、 UE上行测量量、 检测时长、 连续检测时间、 上报门限、 检测请求标识、 源小区信息。 The target node according to any one of claims 16 to 21, wherein the detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, and uplink of the UE. Band information in which the frequency is located, configuration information of the discontinuous transmission of the UE, intra timing offset information of the uplink dedicated physical control channel of the UE, slot format information of the uplink dedicated physical control channel of the UE, scrambling code of the target cell, UE Uplink measurement, detection duration, continuous detection time, reporting threshold, detection request identifier, source cell information.
23、 一种基站, 其特征在于, 包括: A base station, comprising:
接收单元, 用于接收目标节点发送的检测指示; a receiving unit, configured to receive a detection indication sent by the target node;
上行检测单元, 用于根据所述检测指示检测用户设备 UE的上行信号质量; 反馈单元, 用于向所述目标节点发送检测结果。 An uplink detecting unit, configured to detect an uplink signal quality of the user equipment UE according to the detection indication, and a feedback unit, configured to send a detection result to the target node.
24、 根据权利要求 23所述的基站, 其特征在于, 所述接收单元包括: 专用接收模块, 用于接收目标节点发送的检测专用消息, 所述检测专用消 息中携带有所述检测指示; The base station according to claim 23, wherein the receiving unit comprises: a dedicated receiving module, configured to receive a detection dedicated message sent by the target node, where the detection specific message carries the detection indication;
所述反馈单元还用于: 向所述目标节点发送检测专用响应消息, 所述检测 专用响应消息中包含所述检测结果。 The feedback unit is further configured to: send a detection specific response message to the target node, where the detection specific response message includes the detection result.
25、 根据权利要求 24所述的基站, 其特征在于, 还包括: The base station according to claim 24, further comprising:
第二响应单元, 用于在所述反馈单元向所述目标节点发送检测结果之前, 判断所述 UE上行信号质量是否低于指定的门限; a second response unit, configured to send, before the feedback unit sends the detection result to the target node, Determining whether the uplink signal quality of the UE is lower than a specified threshold;
所述反馈单元还用于, 在所述 UE上行信号质量不低于指定的门限时, 执行 所述向所述目标节点发送检测成功的检测专用响应消息。 The feedback unit is further configured to: when the uplink signal quality of the UE is not lower than a specified threshold, perform the detecting specific response message that is sent to the target node to be successfully detected.
26、 根据权利要求 23所述的基站, 其特征在于, 所述接收单元包括: 第一接收单元, 用于接收目标节点发送的第一链路建立请求消息, 所述第 一链路建立请求消息中携带有所述检测指示; The base station according to claim 23, wherein the receiving unit comprises: a first receiving unit, configured to receive a first link setup request message sent by the target node, the first link setup request message Carrying the detection indication;
所述反馈单元还用于: 准备无线链路资源, 并向所述目标节点发送第一链 路建立响应消息, 所述第一链路建立响应消息中包含所述检测结果。 The feedback unit is further configured to: prepare a radio link resource, and send a first link setup response message to the target node, where the first link setup response message includes the detection result.
27、 根据权利要求 26所述的基站, 其特征在于, 还包括: The base station according to claim 26, further comprising:
第一响应单元, 用于在所述反馈单元向所述目标节点发送检测结果之前, 根据所述检测结果判断是否向所述目标节点发送检测结果; a first response unit, configured to determine, according to the detection result, whether to send a detection result to the target node, before the feedback unit sends the detection result to the target node;
所述反馈单元, 还用于在所述 UE上行信号质量不低于指定的门限时, 执行 所述准备无线链路资源并向所述目标节点发送第一链路建立响应消息。 The feedback unit is further configured to: when the uplink signal quality of the UE is not lower than a specified threshold, perform the preparing a radio link resource and send a first link setup response message to the target node.
28、 根据权利要求 26所述的基站, 其特征在于, 还包括: The base station according to claim 26, further comprising:
资源删除单元, 用于在所述反馈单元向所述目标节点发送检测结果之后, 若收到目标节点发送的链路删除请求消息, 则删除已准备的无线链路资源。 And a resource deleting unit, configured to delete the prepared radio link resource if the link deletion request message sent by the target node is received after the feedback unit sends the detection result to the target node.
29、 根据权利要求 23-28中任一项所述的基站, 其特征在于, 所述检测指示 中包含以下信息中的至少一个: UE的上行扰码、 UE的上行频率信息、 UE的上 行频率所在的频带信息、 UE的不连续发送的配置信息、 UE的上行专用物理控 制信道的帧内定时偏移信息、 UE的上行专用物理控制信道的时隙格式信息、 目 标小区的扰码、 UE上行测量量、 检测时长、 连续检测时间、 上报门限、 检测请 求标识。 The base station according to any one of claims 23 to 28, wherein the detection indication includes at least one of the following information: an uplink scrambling code of the UE, uplink frequency information of the UE, and an uplink frequency of the UE. The frequency band information, the configuration information of the discontinuous transmission of the UE, the intra-frame timing offset information of the uplink dedicated physical control channel of the UE, the slot format information of the uplink dedicated physical control channel of the UE, the scrambling code of the target cell, and the uplink of the UE Measurement amount, detection duration, continuous detection time, reporting threshold, detection request identification.
30、 一种源节点, 其特征在于, 包括: 30. A source node, comprising:
切换请求单元, 用于根据 UE上报的测量报告向目标节点发送切换请求消 息, 所述切换请求消息中包含检测指示。 The handover requesting unit is configured to send a handover request message to the target node according to the measurement report reported by the UE, where the handover request message includes a detection indication.
31、 一种选择目标小区的系统, 其特征在于, 包括: 31. A system for selecting a target cell, comprising:
如权利要求 16-22中任一项所述的目标节点; A target node according to any one of claims 16-22;
如权利要求 23-29中任一项所述的基站; 以及 A base station according to any one of claims 23-29;
如权利要求 30所述是源节点。 A source node as described in claim 30.
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